Westwood Park “Social-Distancing” Tree Tour 11-1-20

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Immediately west of San Francisco City College lies the quiet neighborhood of Westwood Park, where most of the bungalow-style homes date back to the 1920s. A surprisingly warm, picture-perfect autumn day welcomed us for our seventeenth tree tour, offering up some uncommon and interesting trees along the gently curving streets and in the many horticulturally rich front gardens—somewhat surprising since this can be a fairly foggy neighborhood.

 This tree walk begins at the northwest corner of the intersection of Miramar Avenue and Ocean Avenue, the southern edge of Westwood Park. It heads north to Southwood Drive, east on Southwood and then north on Plymouth Avenue to Montecito Avenue, southwest on Montecito to Eastwood Drive, west on Eastwood to Miramar (“Main Street” of Westwood Park), and north on Miramar to Monterey Blvd. The tour then tucks briefly into Monterey Heights on Yerba Buena Avenue, returning to Monterey and heading west to Northgate Drive, then south on Northgate (into Mt Davidson Manor), west on Darien Way, southwest on Manor Drive, east on Kenwood Way, and back into Westwood Park on Faxon. It then heads south on Faxon to Wildwood, east on Wildwood, and finally south on Miramar to the beginning at Ocean. This walk is about two miles long.

 Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 54. White arrows on the pavement provide directions whenever a turn is needed.

 Miramar Avenue at Ocean, northwest corner

1. 1500 Ocean             Red-flowering gum hybrid (Corymbia ficifolia hybrid?), Southwest Australia (the pendulous branches and red central leaf vein suggest that it is not a pure Corymbia ficifolia)

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 Miramar Avenue median at Southwood, north side of intersection

2. Median        Italian stone pine (Pinus pinea), Mediterranean Basin (source of pine nuts/pignoli)

 Southwood Drive, Miramar to San Ramon, west side

3. 80 Southwood        Red-flowering gum (Corymbia ficifolia), Southwest Australia (this tree loves SF’s climate)

 4. 55 Southwood        Bloodwood (Baloghia inophylla), Eastern Australia (quite possibly the only one of                           its kind in SF, outside of the Botanical Gardens)

 5. 44 Southwood        Japanese blueberry tree (Elaeocarpus decipiens), Eastern Asia

 6. 32 Southwood        Grapefruit tree (Citrus x paradisi), hybrid of Southeast Asian species

 7. 101 San Ramon       Jacaranda (Jacaranda mimosifolia), Argentina, Bolivia (who would think it survive this far west in SF; perhaps another sign of a warming climate)

 8. 101 San Ramon       Edible fig tree (Ficus carica), Mediterranean Basin & Middle East (this young specimen has deeply lobed leaves)

 Plymouth Avenue, San Ramon to Wildwood, west side

9. 1315 Plymouth       Silver tree (Leucadendron argenteum), Cape Town, South Africa

Majestic Beauty Indian hawthorn (Rhaphiolepis x ‘Montic’)

Majestic Beauty Indian hawthorn (Rhaphiolepis x ‘Montic’)

 10. 1315 Plymouth      Angel’s trumpet (Brugmansia x candida ‘Double White’), Andes Mountains of South America

 Plymouth Avenue, Wildwood to Montecito, west side

11. 1401 Plymouth      Cork oak (Quercus suber), Spain & Portugal (the bark of this tree provides the cork used in wine bottles)

 12. 1405 Plymouth      Marina strawberry tree (Arbutus ‘Marina’), hybrid of Mediterranean species (first introduced in San Francisco - the interesting San Francisco story can be found here)

 12B. 1422 Plymouth   Majestic Beauty Indian hawthorn (Rhaphiolepis x ‘Montic’), South China & Japan to Southeast Asia

Water gum (Tristaniopsis laurina)

Water gum (Tristaniopsis laurina)

 13. 401 Montecito       Water gum (Tristaniopsis laurina), Eastern Australia (it grows in streamside locations in the wild; hence, the common name; SF’s most commonly planted street tree)

 14. 401 Montecito       Monkey puzzle tree (Araucaria araucana), Chile (stiff, sharply pointed are said to prohibit monkeys, or anything else, from climbing the trees)

 **Turn left on Montecito Avenue and right on Eastwood Drive**

 Eastwood Drive, Montecito to Miramar, northeast side

15. 176 Eastwood       Cook pine (Araucaria columnaris), New Caledonia

 Coast redwood (Sequoia sempervirens), Monterey to Southwest Oregon; CA coastal native (tallest tree species in the world)

 Lemon (Citrus x limon) South Asia

 16. 690 Miramar       Pindo palm (Butia odorata), Southern Brazil & Uruguay

 Miramar Avenue, Eastwood to Northwood, east side

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17. 730 Miramar         Giant yucca (Yucca gigantea), Central America

 Miramar Avenue, Northwood to Monterey, east side

18. 800 Miramar         Chinese elm (Ulmus parvifolia), East Asia

 ***Cross Monterey carefully at the crosswalk (traffic does not have a stop sign), then climb the stairs and cross the other half of Monterey at the crosswalk***

 Yerba Buena Avenue, north of Monterey, east side

19. 990 Monterey        Coast live oak (Quercus agrifolia), California native! (one of the few trees native to San Francisco)

Blue Atlas cedar (Cedrus atlantica ‘Glauca’)

Blue Atlas cedar (Cedrus atlantica ‘Glauca’)

 20. 481 Yerba Buena   New Zealand Christmas tree, pōhutukawa in Māori (Metrosideros excelsa), New Zealand (2 trees; widely planted in SF, where it loves the climate)

 21. 461 Yerba Buena   Olive (Olea europaea), Mediterranean Basin

 21B. 431 Yerba Buena Blue Atlas cedar (Cedrus atlantica ‘Glauca’), Morocco & Algeria

 **Cross Yerba Buena Avenue carefully***

 Yerba Buena Avenue, north of Monterey, west side

22. 422 Yerba Buena   African linden (Sparmannia africana), South Africa

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 23. 460 Yerba Buena   Chilean palm (Jubaea chilensis), Chile (one of SF’s finest specimens)

 24. 460 Yerba Buena   Monterey pine (Pinus radiata), Año Nuevo, Monterey, Cambria, CA native, most widely planted coniferous tree in the world (mostly for lumber; this is a particularly fine specimen, standing tall behind the palm)

 Port Orford cedar (Chamaecyparis lawsoniana), Southwest Oregon & Northwest California (this is the weeping tree next to the stairs)

 Monterey Blvd, Yerba Buena to St. Elmo, north side

25. 1010 Monterey      Norfolk Island pine (Araucaria heterophylla), Australia, Norfolk Island (it’s the tall “Christmas tree” in the rear yards of houses across the street, and on the horizon)

 26. 195 St. Elmo          Sweet michelia (Magnolia doltsopa), Himalayas (big, white fragrant flowers appear in winter)

 St. Elmo Way at Monterey, northwest corner

27. 196 St. Elmo          Tree aloe (Aloidendron barberae, formerly Aloe bainesii), Southern & East Africa

 Monterey Blvd, St. Elmo to El Verano, north side

28. 1100 Monterey      King palm (Archontophoenix cunninghamiana), East Australia (4 trees)

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 **Cross Monterey Blvd at the crosswalk onto Northgate Drive**

 Northgate Drive at Darien, northeast corner

29. 100 Northgate       Pindo palm (Butia odorata), Southern Brazil & Uruguay (SF’s champion specimen)

 Darien Way, west of Northgate, north side, then south side

30. 855 Darien            Sycamore maple (Acer pseudoplatanus), Europe & W Asia

 31. 855 Darien            Polylepis sp., Andes Mountains of South America (highest altitude tree genus in the New World)

 ***Cross Darien carefully to the south side***

 32. 870 Darien            Hollywood juniper (Juniperus chinensis ‘Torulosa’ or ‘Kaizuka’), East Asia

 33. 240 Manor             English holly (Ilex aquifolium), Western Europe & North Africa

 33B. 240 Manor          Queen palm (Syagrus romanzoffiana), Southern Brazil

 [34 not used]

 Manor Drive, Darien to Upland, east side

35. 240 Manor             Canary Island date palm (Phoenix canariensis), Canary Islands, Spain

 Manor Drive, Upland to Kenwood, east side

36. 165 Manor             Canary Island date palm (Phoenix canariensis), Canary Islands, Spain (2 fairly young trees across the street; they are just beginning to develop their trunks)

 37. 120 Manor             European weeping birch (Betula pendula), Eurasia (not usually well-adapted to SF)

 38. 120 Manor             Victorian box (Pittosporum undulatum), Eastern Australia

 Kenwood Way, Manor to Keystone, south side

39. 95 Keystone          Mediterranean fan palm (Chamaerops humilis), Western Mediterranean Basin

 ***Cross Kenwood carefully***

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 Kenwood Way, Keystone to Upland, north side

40. 160 Kenwood        Strawberry tree (Arbutus unedo), Mediterranean Basin & Ireland

 41. 156 Kenwood        Cajeput tree (Melaleuca quinquenervia), Eastern Australia (feel the spongy bark)

 42. 130 Kenwood        Lemon bottlebrush (Callistemon citrinus), Eastern Australia (the crushed leaves smell of lemon)

 Darien Way, north of Kenwood, east side

43. 965 Darien            Dark Shadows tea tree (Leptospermum ‘Dark Shadows’), Australia (2 trees)

 44. 971 Darien             Cabbage tree or tī kōuka in Māori (Cordyline australis), New Zealand

 **Return to Kenwood Way and head east a short block to Faxon Avenue and head south on Faxon**

 Faxon Avenue, Kenwood to Wildwood, west side

45. 849 Faxon              African fern pine (Afrocarpus gracilior), Eastern & Southern Africa

 46. 840 Faxon              Chinese windmill palm (Trachycarpus fortunei), China

 **Follow Wildwood Way east to Westwood Drive, and head south on Westwood**

 Westwood Drive, Wildwood to Miramar, east side

47. 98 Westwood        Callery pear (Pyrus calleryana), China & Vietnam (this species seldom does well in SF, but these seem to be thriving)

 48. 91 Westwood        Trident maple (Acer buergerianum), East Asia (tree is across the street)

 49. 66 Westwood        Peppermint willow (Agonis flexuosa), Southwest Australia

 50. 42 Westwood        Ray Hartman ceanothus (Ceanothus ‘Ray Hartman’), hybrid of CA native species (note that this garden is planted almost exclusively with CA native plants)

 51. 20 Westwood        Torbay Dazzler cabbage tree (Cordyline australis ‘Torbay Dazzler’), New Zealand

Silver tree (Leucadendron argenteum)

Silver tree (Leucadendron argenteum)

 52. 20 Westwood        Silver tree (Leucadendron argenteum), Cape Town, South Africa

 Miramar Avenue, Westwood to Ocean, west side

53. 447 Miramar         Himalayan white birch (Betula utilis var. jacquemontii), Himalayas

 54. 425 Miramar         Silk oak (Grevillea robusta), Eastern Australia

Our regular commercial: This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco and webmaster of www.sftrees.com; Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine . You can follow Mike and Jason on their tree-themed Instagram pages at @sftreeguy and @loulufan. Richard edited another great book on San Francisco trees: Elizabeth McClintock’s Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books!

Glen Park "Social Distancing" #covidtreetour

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[NOTE: we just chalked a tour of the Westwood Park neighborhood; that tour should be up on this site by Monday evening. For our earlier tours, click here for the Bayview, Bernal Heights, Castro, Dogpatch, Glen Park, Inner Sunset, Lower Haight, Mission (central Mission), Mission (Inner Mission), Mission Bay, Noe Valley, Potrero Hill, Richmond/SeatCliff, Russian Hill, Transmission and West Portal tours.]

Glen Park is one of the most charming and distinctive neighborhoods in San Francisco. Steep hills facing south, narrow winding streets, and jewelbox homes characterize the neighborhood—along with a good selection of trees. Combine that with a small but wonderful shopping district, and you’ve got a nearly perfect residential neighborhood. 

This tree walk begins at Bird & Beckett Books, on Chenery Street—certainly one of the most popular independent bookstores in town. It then heads east on Chenery, north on Castro Street, northeast on Laidley Street for 2 ½ blocks, then back to Castro. It continues north on Castro for another block to Sussex Street, northwest and west on Sussex to Swiss Avenue, south on Swiss to Surrey Street, west on Surrey a few yards to Chenery, and finally east on Chenery back to Diamond Street, a short block from the start at Bird & Beckett. This walk is a little under two miles long.

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 56. White arrows on the pavement provide directions whenever a turn is needed.

Our trio of tree geeks responsible for this tour is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

Our thanks to Kay Estey and readers of her garden column in the Glen Park News for suggestions of trees in the neighborhood to include on this walk.

Chenery Street, Diamond to Castro, south side

Canary Island date palm (Phoenix canariensis)

Canary Island date palm (Phoenix canariensis)

1. 655 Chenery             Coast redwood (Sequoia sempervirens), Monterey to Southwest  Oregon; CA coastal native (tallest tree species in the world)

2. 600 block of Chenery          Indian laurel fig (Ficus microcarpa ‘Nitida’), South Asia (row of trees across the street; a common, albeit problematic, street tree throughout SF)

3. 641 Chenery            Canary Island date palm (Phoenix canariensis), Canary Islands, Spain (planted in 1989 as tiny tree)

4. 3110 Castro             African fern pine (Afrocarpus gracilior), East & Southern Africa (row of 3 trees on Chenery)

Glossy privet (Ligustrum lucidum)

Glossy privet (Ligustrum lucidum)

Castro Street, Chenery to Laidley, west side

5. 3110 Castro             Sweetgum (Liquidambar styraciflua), Eastern  USA to Mexico & Central America

6. 3102 Castro             Glossy privet (Ligustrum lucidum), South China

***Cross Castro carefully to Laidley Street***

Laidley Street, Castro to Roanoke, southeast side

7. 577 Laidley             Marina strawberry tree (Arbutus ‘Marina’), hybrid of Mediterranean species (first introduced in San Francisco, where it is increasingly common - the interesting San Francisco story can be found here)

8. 535 Laidley             Myoporum or ngaio in Māori (Myoporum laetum), New Zealand (these trees are dying all over San Francisco, due to an insect pest called thrips)

Myoporum or ngaio in Māori (Myoporum laetum); this tree shows the effects of thrip infestation that is affecting the species everywhere in San Francisco.

Myoporum or ngaio in Māori (Myoporum laetum); this tree shows the effects of thrip infestation that is affecting the species everywhere in San Francisco.

9. 533 Laidley             After Dark peppermint willow (Agonis flexuosa ‘Jervis Bay Afterdark’), Southwest  Australian cultivar (often less vigorous than the green-leafed species)

10. 521 Laidley           Southern magnolia (Magnolia grandiflora), Southeast USA (state tree of Mississippi)

11. 100 Roanoke         Eureka lemon (Citrus limon), hybrid from South Asia (hanging over the back fence on Laidley)

Laidley Street, Roanoke to Mateo, southeast side

12. 447 Laidley           Victorian box (Pittosporum undulatum), East Australia (usually a tree, here it has been pruned to remain a shrub)

13. 100 Mateo             Water gum (Tristaniopsis laurina), East Australia (tree is on Laidley; it grows          in streamside locations in the wild; hence, the common name; SF’s most commonly planted street tree)

Laidley Street, northeast of Mateo, southeast side

Kentia palms (Howea forsteriana)

Kentia palms (Howea forsteriana)

14. 371 Laidley           Kentia palms (Howea forsteriana) in the front garden next to the house, Lord Howe Island, Australia; also queen palms (Syagrus romanzoffiana) from Southern Brazil, in the sidewalk cuts at this address

15. 347-353 Laidley     Mayten (Maytenus boaria), Chile (row of 3 trees)

***Cross Laidley carefully***

Laidley Street, northeast of Mateo, northwest side

16. 380 Laidley    Queen palm (Syagrus romanzoffiana), Southern Brazil - a particularly nice specimen!

17. 376 Laidley           Cajeput tree (Melaleuca quinquenervia), East Australia (feel the spongy bark)

18. 48 Mateo               Brazilian pepper tree (Schinus terebinthifolius), Brazil (tree is on Laidley)

London plane tree (Platanus x acerifolia); showing the effect of repetitive “pollarding”, which creates knobby branch endings

London plane tree (Platanus x acerifolia); showing the effect of repetitive “pollarding”, which creates knobby branch endings

Laidley Street, Mateo to Roanoke, northwest side

19. 456 Laidley           Carrotwood (Cupaniopsis anacardioides), East Australia

Roanoke Street, northwest of Laidley

20. 486 Laidley           Incense cedar (Calocedrus decurrens), CA native; Oregon to Baja (the tree is on Roanoke; the wood was used in construction and for making pencils)

21. Full block of Roanoke       London plane trees (Platanus x acerifolia), hybrid of Eastern USA species and European species (these trees, on both sides of the street, have been pollarded in the past (pollarding means the repeated removal of the upper branches of a tree, which promotes the growth of a dense head of foliage and branches)

Laidley Street, Roanoke to Castro, northwest side

New Zealand tea tree (Leptospermum scoparium ‘Ruby Glow’)

New Zealand tea tree (Leptospermum scoparium ‘Ruby Glow’)

22. 554 Laidley           New Zealand tea tree (Leptospermum scoparium ‘Ruby Glow’), New Zealand

23. 556 Laidley           Locust (Robinia x ambigua ‘Idahoensis’), hybrid of North American species (fragrant pink flowers in early summer)

24. 3045 Castro           Peppermint willow (Agonis flexuosa), Southwest  Australia (2 trees are on Laidley)

Castro Street, Laidley to Sussex, west side

25. 3068 Castro           Red alder (Alnus rubra), CA to Alaska; a rare SF native! (tree is in the side yard, above the fence)

26. 3006 Castro           Evergreen pear (Pyrus kawakamii), Taiwan

**Take a short side excursion to 283 Bemis Street (southeast side) for a Mediterranean fan palm (Chamaerops humilis), Western Mediterranean Basin

Sussex Street, Castro to Diamond, southwest side

Giant yucca (Yucca gigantea) on the left; Majestic Beauty Indian hawthorn (Rhaphiolepis x ‘Montic’) on the right

Giant yucca (Yucca gigantea) on the left; Majestic Beauty Indian hawthorn (Rhaphiolepis x ‘Montic’) on the right

27. 1 Sussex     Victorian box (Pittosporum undulatum), East Australia (white flowers, very                                                            fragrant)

28. 11 Sussex   Japanese camellia (Camellia japonica), East Asia (though usually grown as a shrub for its beautiful late winter/spring flowers, Japanese camellia is actually a small tree)

29. 15 Sussex   Ray Hartman ceanothus (Ceanothus ‘Ray Hartman’), hybrid of CA native species

30. 41 Sussex   River wattle (Acacia cognata), Southeast Australia

Monterey cypress (Hesperocyparis macrocarpa)

Monterey cypress (Hesperocyparis macrocarpa)

31. 53 Sussex   Giant yucca (Yucca gigantea), Central America

32. 53 Sussex   Majestic Beauty Indian hawthorn (Rhaphiolepis x ‘Montic’), South China & Japan to Southeast Asia

33. 62 Sussex   Weeping bottlebrush (Callistemon viminalis), East Australia (across the street)

Sussex Street, Diamond to Van Buren, southeast side

34. 2600 Diamond      Red-flowering gum (Corymbia ficifolia), Southwest  Australia (tree is on Sussex; this tree loves SF’s climate)

35. 155 Sussex             Monterey cypress (Hesperocyparis macrocarpa), Carmel, CA native

**The steep alley to the left of the fence is Ohlone Way, named for the Native Californians who once occupied much of the San Francisco Bay Area (and one of San Francisco’s few remaining unpaved streets).

Ohlone Way, one of San Francisco’s few remaining unpaved streets

Ohlone Way, one of San Francisco’s few remaining unpaved streets

Van Buren Street, Sussex to Surrey

36. Both sides of Van Buren   Lemon bottlebrush (Callistemon citrinus), East Australia (the crushed leaves smell of lemon)

Sussex Street, Van Buren to Swiss Avenue, south side

Catalina ironwood (Lyonothamnus floribundus ssp. asplenifolius)

Catalina ironwood (Lyonothamnus floribundus ssp. asplenifolius)

37. 167 Sussex             Fern-leaf Catalina ironwood (Lyonothamnus floribundus ssp. asplenifolius), CA’s Channel Islands, except Catalina; CA native (a particularly fine specimen)

**For another side excursion, head uphill on Conrad Street a short distance to Poppy Lane and turn right into this unpaved alley; about fifty yards down on the left is a giant specimen of California buckeye (Aesculus californica). This stunning tree might well be older than the homes that surround it.

38. 201 Sussex             Hybrid tea tree (Leptospermum ‘Dark Shadows’), Australia

39. 201 Sussex             Marina strawberry tree (Arbutus ‘Marina’), hybrid of Mediterranean species (one of SF’s finest speciments; first introduced in San Francisco - the interesting San Francisco story can be found here)

40. 205 Sussex             New Zealand cabbage tree (Cordyline hybrid), New Zealand

41. 261 Sussex             Kwanzan flowering cherry (Prunus serrulata ‘Kwanzan’), East Asia

42. 291 Sussex             Primrose tree (Lagunaria patersonii), Australia & South Pacific Islands

Guadalupe palm (Brahea edulis)

Guadalupe palm (Brahea edulis)

**Another side excursion to 333 Sussex (southwest side) will bring you to a Guadalupe palm (Brahea edulis), from Guadalupe Island, Baja California

Swiss Avenue, Sussex to Surrey, west side

43. 116 Swiss              Strawberry tree (Arbutus unedo), Mediterranean Basin & Ireland

44. 120 Swiss              Princess tree (Tibouchina urvilleana), Southern Brazil (usually a shrub, sometimes becoming a tree; notable for its intense purple flowers; loves San Francisco!)

45. 140 Swiss              Purple-leaf plum (Prunus cerasifera ‘Krauter Vesuvius’), Eurasia (a selection of purple-leaf plum from a Bakersfield nursery)

46. 146 Swiss              New Zealand Christmas tree, pōhutukawa in Māori (Metrosideros excelsa), New Zealand (widely planted in SF, where it loves the climate)

Surrey Street, Swiss to Chenery, north side

Canary Island pine (Pinus canariensis)

Canary Island pine (Pinus canariensis)

47. 360 Surrey Wollemi pine (Wollemia nobilis), East Australia (peer through the cracks in the fence to see this rare tree at the very corner of the garden; google it to read the intriguing story of the tree’s discovery in the mid-1990s)

**The home at 370 Surrey belongs to Zoeanne Nordstrom, one of the three “Gum Tree Girls” who fought hard to prevent a freeway from being built through nearby Glen Canyon Park.

48. 398 Surrey             Canary Island pine (Pinus canariensis), Canary Islands

Chenery Street, Surrey to Burnside, south side

49. 959 Chenery          Peruvian pepper tree (Schinus molle), Peru, Chile

Chenery Street, Burnside to Chilton, south side

Red-flowering gum (Corymbia ficifolia)

Red-flowering gum (Corymbia ficifolia)

50. 925 Chenery          Coffee tree (Coffea arabica), Eastern Africa & Yemen (tree is in the entry court of St John’s Catholic School; coffee trees are seldom seen outdoors in SF)

51. 907 Chenery          Flowering gum (Corymbia hybrid), Southwest  Australia

52. 864 Chenery          Olive (Olea europaea), Mediterranean Basin (across the street)

53. 828 Chenery          Red-flowering gum (Corymbia ficifolia), Southwest  Australia (a softly colored specimen across the street)

Chenery Street, Chilton to Diamond, south side

54. 775 Chenery          Victorian box (Pittosporum undulatum), East Australia (white flowers, very fragrant)

55. 757-763 Chenery   New Zealand Christmas tree, pōhutukawa in Māori (Metrosideros excelsa), New Zealand (widely planted in SF, where it loves the climate)

56. 751 Chenery          Cabbage tree or tī kōuka in Māori (Cordyline australis), New Zealand

End of tour at Chenery and Diamond, a half-block from the start at Bird & Beckett Books.

Tree fans may wish to visit the Glen Park Greenway, which parallels Bosworth Street on its north side, to see the new plantings of coast live oaks (Quercus agrifolia) and other, mostly native, trees and shrubs. The Greenway runs from Diamond to Elk Street, where it meets the bottom end of Glen Canyon Park. The Greenway is a volunteer-run project.

Our regular commercial: This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco and webmaster of www.sftrees.com; Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine .  You can follow Mike and Jason on their tree-themed Instagram pages at @sftreeguy and @loulufan. Richard edited another great book on San Francisco trees: Elizabeth McClintock’s Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books!

Transmission "Social Distancing" tree tour 10-11-20

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 [NOTE: we chalked a new tour in the Glen Park neighborhood yesterday (10-25-20); that tour should be up on this site very soon!]

We were treated to another gorgeous autumn day for this walk through the “Transmission” neighborhood, with a focus on Fair Oaks, one of the most desirable streets in the Mission/Noe Valley neighborhoods. A warm climate with underground streams likely, this neighborhood is filled with an array of notable trees, including a few seldom seen in the City. It’s a short walk, but a rich one tree-wise.

The walk begins on Dolores and 22nd streets and heads east on 22nd to Fair Oaks Street, then south on Fair Oaks to 24th Street, east on 24th to San Jose Avenue, north on San Jose to 22nd, and then west on 22nd to Fair Oaks, a block from the tour’s start. This walk is a little over one mile long.

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 46. White arrows on the pavement provide directions whenever a turn is needed.

China doll tree (Radermachera sinica) - a City Champion - biggest in San Francisco by far!

China doll tree (Radermachera sinica) - a City Champion - biggest in San Francisco by far!

Our trio of tree geeks responsible for this tour is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

Dolores Street at 22nd Street, northeast corner

1. 895 Dolores             Carob (Ceratonia siliqua), Eastern Mediterranean Basin (seed pods can be used to make a chocolate substitute—though not recommended for true chocolate lovers)

22nd Street, Dolores to Fair Oaks, north side

2. 2476 - 22nd      Jacaranda (Jacaranda mimosifolia), Argentina, Bolivia

3. 3470 - 22nd             China doll tree (Radermachera sinica), China and Taiwan (City champion; biggest of its species in SF!) We picked the location of this tour in part because of this tree - it is one of San Francisco’s most notable trees.

Peppermint willow (Agonis flexuosa) on 22nd Street

Peppermint willow (Agonis flexuosa) on 22nd Street

4. 3456 - 22nd             Peppermint willow (Agonis flexuosa), Southwest Australia (one of SF’s biggest and best)

Turn right on Fair Oaks Street.

Fair Oaks Street, 22nd to 23rd, west side

5. 3451 - 22nd              Pink Majestic Indian hawthorn (Raphiolepis x ‘Montic’), South China and Japan to Southeast Asia (tree is on Fair Oaks)

6. 108 Fair Oaks          Indian laurel fig (Ficus microcarpa ‘Nitida’), SouthAsia (a common, albeit problematic, street tree throughout SF)

7. 110 Fair Oaks          Snake-bark maple (Acer davidii), China (another City champion; a very very rare tree in San Francisco - this is the biggest of the species in SF)

8. 112 Fair Oaks          Douglas-fir (Pseudotsuga menziesii), West Coast and Rocky Mountains to South Mexico (needle leaves, a CA native tree!)

9. 114 Fair Oaks          Chinese elm (Ulmus parvifolia), East Asia (tree is on 22nd)

Two female ginkgos (Ginkgo biloba) on Fair Oaks

Two female ginkgos (Ginkgo biloba) on Fair Oaks

10. 116 Fair Oaks        Ginkgo (Ginkgo biloba), China (these are both female trees; it’s very rare to find female Ginkgos as street trees - their nuts are edible, but the rotting flesh stinks)

11. 145 Fair Oaks        Senegal date palm (Phoenix reclinata), South Africa to Kenya to Senegal (across the street; rare in SF)

11b. 116 Fair Oaks      Cabbage tree or tī kōuka in Māori (Cordyline australis), New Zealand

12. 118 Fair Oaks        Brisbane box (Lophostemon confertus), Eastern Australia

13. 120 Fair Oaks        Hollywood juniper (Juniperus chinensis ‘Torulosa’ or ‘Kaizuka’), East Asia

14. 120 Fair Oaks        Snow-in-summer tree or flax-leaf paperbark (Melaleuca linariifolia), Eastern Australia (feel the spongy bark)

15. 124 Fair Oaks        Kwanzan flowering cherry (Prunus serrulata ‘Kwanzan’), East Asia

16. 180 Fair Oaks        Red horse chestnut (Aesculus x carnea), hybrid of European and American species (2 trees)

Fair Oaks Street, 23rd to 24th, west side

17. 200 Fair Oaks        Little-leaf linden (Tilia cordata), Eurasia (3 trees on 23rd)

Queen palm (Syagrus romanzoffiana)

Queen palm (Syagrus romanzoffiana)

18. 202 Fair Oaks        London plane tree (Platanus x acerifolia), hybrid of Eastern USA species and European species

19. 206 Fair Oaks        Queen palm (Syagrus romanzoffiana), Southern Brazil (3 trees)

20. 216 Fair Oaks        Cabbage tree or tī kōuka in Māori (Cordyline australis), New Zealand (a particularly tall specimen, reaching for the light between the buildings)

21. 261 Fair Oaks        Japanese zelkova (Zelkova serrata), East Asia (across the street; a common replacement for American elms, which were decimated by Dutch elm disease in the eastern USA)

22. 260 Fair Oaks        Irish yew (Taxus baccata ‘Fastigiata’), Eurasia and North Africa

23. 264 Fair Oaks        Mayten (Maytenus boaria), Chile

24. 272 Fair Oaks        Purple-leaf plum (Prunus cerasifera ‘Krauter Vesuvius’), Eurasia (a selection of purple-leaf plum that originated in a Bakersfield nursery)

25. 286 Fair Oaks        “Wishful” water gum (Tristaniopsis laurina “Esperanza”), Eastern Australia (add a wish of your own)

Brazilian pepper tree (Schinus terebinthifolius)

Brazilian pepper tree (Schinus terebinthifolius)

Turn left on 24th Street.

24th Street, Fair Oaks to Guerrero, north side

26. 3638 - 24th             Bronze loquat (Raphiolepis deflexa, syn. Eriobotrya deflexa), Southern China and Vietnam

27. 3632 - 24th            Marina strawberry tree (Arbutus ‘Marina’), hybrid of Mediterranean species, first introduced in San Francisco - the interesting San Francisco story can be found here

28. 3618 - 24th             Brazilian pepper tree (Schinus terebinthifolius), Brazil

**Short jog left on Guerrero to see #29, then return to 24th Street.

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Guerrero Street, just north of 24th, west side

29. 1100-1102 Guerrero          California fan palm (Washingtonia filifera), Southern California; also Mexican fan palm (Washingtonia robusta), Mexico; (the two palms are across the street).  The California fan palm, with the thicker trunk, is very rare in San Francisco, and it’s interesting to see it next to its thinner-trunked relative at this address.

24th Street, Guerrero to San Jose, north side

30. 3599 - 24th             Nichol’s willow-leaf peppermint (Eucalyptus nicholii), Southeast Australia (across the street, alongside Fiore Cafe)

31. 3528 - 24th             Gold medallion tree (Cassia leptophylla), Southern Brazil

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32. 3502 - 24th             Italian stone pine (Pinus pinea), Mediterranean Basin (source of pine nuts/pignoli)

San Jose Avenue, 24th to Elizabeth, west side

33. 120 San Jose          Victorian box (Pittosporum undulatum), Eastern Australia (white flowers, very fragrant)

33-1/2. 102 San Jose Gingko (Gingkgo biloba), China - two more female ginkgos! These trees were full of fruit that will soon be “odoriferous” on the street. This was the second address on this tour with two female ginkgos - a big surprise to the three of us.

34. 1 Elizabeth            New Zealand Christmas tree, pōhutukawa in Māori (Metrosideros excelsa), New Zealand (widely planted in SF, where it loves our cool, coastal climate)

35. 123 San Jose          Two big-leaf maple trees (Acer macrophyllum), West Coast; SF native. It’s very rare to see this California native as a street tree!

San Jose Avenue at 23rd, southwest corner

35. 4 Elizabeth            Lemon (Citrus x limon) South Asia (tree is at corner of 23rd and San Jose)

36. 3503 - 23rd            Shoestring acacia (Acacia stenophylla), Western Australia

37. 3503 - 23rd            Knife-leaf acacia (Acacia cultriformis), Eastern Australia

38. 3503 - 23rd            Pasopaya palm (Parajubaea torallyi), Bolivian Andes (5 trees; very rare tree on San Francisco’s streets)

39. 3503 - 23rd            Waggie palm (Trachycarpus fortunei ‘Wagnerianus’); also a Blue Mediterranean fan palm (Chamaerops humilis var. argentea), Algeria  and Morocco

Turn left on San Jose Avenue.

San Jose Avenue, 23rd to 22nd, west side

40. 50 San Jose            Southern magnolia (Magnolia grandiflora), Southeast USA

***Please cross 22nd Street carefully***

22nd Street, San Jose to Guerrero, north side

Paradox walnut (Juglans x paradoxa)

Paradox walnut (Juglans x paradoxa)

41. 3326 - 22nd            Paradox walnut (Juglans x paradoxa), hybrid of CA native and European species)

42. 3334 - 22nd            Prickly melaleuca (Melaleuca styphelioides), Eastern Australia

43. 3342 - 22nd            Ginkgo (Ginkgo biloba), China (one of SF’s best specimens)

** If you have time, take a side excursion to 1054-1058 Guerrero to pay homage to some interesting trees at Flora Grubb’s previous residence, before continuing on 22nd.**

1054 Guerrero            Willow wattle (Acacia iteaphylla), South Australia; Puka (Meryta sinclairii), New Zealand;  Forest Pansy redbud (Cercis canadensis ‘Forest Pansy’), Eastern USA

1058 Guerrero            Tree aloe (Aloidendron barberae, formerly Aloe bainesii), South and East Africa (two magnificent specimens)

22nd Street, Guerrero to Fair Oaks, north side

44. 3412 - 22nd            Cajeput tree (Melaleuca quinquenervia), Eastern Australia (feel the spongy bark)

45. 3446 - 22nd            River wattle (Acacia cognata), Southeast Australia

46. 3446 - 22nd            Australian willow (Geijera parviflora), East and Southeast Australia

This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.  

Mission Bay "Social Distancing" tree tour 9-6-20

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For this week’s tour, we visit the City’s first 21st-century neighborhood: Mission Bay. Once a land of warehouses and rail yards, Mission Bay has grown in the past two decades into a dense and dynamic urban neighborhood, filled with hospitals and medical facilities, corporate offices, housing for students and families, shops and restaurants, the Golden State Warriors’ new home (Chase Center), public art, numerous parks, plazas, and open space — and plenty of street trees. Because this entire neighborhood has been created by a developer in a series of broad strokes, the trees tend to appear as monocultures (masses of a single species) along streets and within parks. (Monocultures sometimes lead to diseases sweeping through a planting, seriously affecting all the trees of the same species.)

The tour begins on Terry Francois Blvd, at the eastern end of Mission Bay Commons Park, a broad green stripe of parkland through the neighborhood, flanked by Mission Bay Blvd, North and South.

The walk heads west along Mission Bay Blvd North to 3rd Street, then north on 3rd to China Basin Street, west on China Basin to 4th Street, and north on 4th to Channel Street. From here, the walk leads southwest on Channel Street along the south side of Mission Creek Park; the park contains a fine selection of trees, but the rough pavement precludes chalking. Midway to El Dorado Street, the tour crosses Channel Street and leads down a shaded pedestrian passage to Long Bridge Street, then heads west briefly before crossing to the walkway along the eastern side of Mission Bay Kids’ Park.

At China Basin Street, the walk heads further west along the park’s southern edge, dipping into the park for a single fine specimen of oak. The walk then heads back to China Basin Street, crosses at Merrimac Street, and heads south to Mission Bay Blvd North, then east to 4th Street, south on 4th to Mission Bay Blvd South, east on Mission Bay Blvd South to to the narrow passageway that leads south into the Cardiovascular Research Institute.

From here, the walk exits the southwest corner of the plaza and crosses Nelson Rising Lane into the UCSF residential complex, and out into Gene Friend Way, a broad linear pedestrian walkway. Taking Gene Friend Way to the west, the tour dips into the garden of the Sandler Neurosciences Center, then heads south between green Koret Quad and the Mission Bay Conference Center. At Campus Way, the tour heads west to Owens Street, then northwest along Owens to Gene Friend Way, here a private street.

After crossing Owens at Gene Friend, the tour heads southeast on Owens to the extension of Campus Way, dipping briefly into a pedestrian passageway all the way to B Street, almost below the elevated freeway, before returning to Owens, then heading souteast to 16th Street, east on 16th to Terry Francois Blvd, and north on Terry Francois to Warriors Way.

At Warriors Way, the walk heads west to Bridgeview Way, then north on Bridgeview to Pierpoint Lane, mid-block, east through Pierpoint to Terry Francois Blvd again, and north to the starting point at Mission Bay Commons Park.

Spotted gum - Eucalyptus maculata, very close to the starting point of the tour

Spotted gum - Eucalyptus maculata, very close to the starting point of the tour

We’ve provided this long introduction to the itinerary since street addresses are not always obvious in the neighborhood. Many of the trees are planted in block-long monocultures, where we have chosen not to locate by address but by block. Most of the trees are planted in pockets in the sidewalk pavement; many, however, are planted in public parks and plazas.

The numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 53. White arrows on the pavement provide directions whenever a turn is needed. Our trio of tree geeks responsible for this tour is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

We strongly recommend using google maps to help in navigating the area. Have fun exploring this new urban neighborhood!

Terry Francois Blvd, between Mission Bay Blvds North and South, west side

1.         Western red cedar (Thuja plicata), CA native; CA to AK and MT (a staggered line of 7 trees, uncommon in SF; this is an important timber tree in the Pacific Northwest, where Native Americans use it for canoes and totem poles)        

Mission Bay Blvd North, at Terry Francois, north side

2.         Incense cedar (Calocedrus decurrens), CA native; Baja, CA, OR (2 trees; the wood of this tree is used in construction and for making pencils)

Mission Bay Blvd North, Terry Francois Blvd to Bridgeview Way, north side

3.         Brisbane box (Lophostemon confertus), E Australia (this is the dominant street tree along the full length of Mission Bay Blvd North and most of the way along Mission Bay Blvd South)

Mexican fan palm (Washingtonia robusta)

Mexican fan palm (Washingtonia robusta)

4.         European hornbeam (Carpinus betulus), NW Europe to Iran (this is the tree on both sides of Bridgeview Way from Mission Bay Blvd North to China Basin St)

***Cross to the Mission Bay Commons Park, between Mission Bay Blvd North and South

Mission Bay Commons Park, Bridgeview to 3rd St, northside walk

5.         Coast redwood (Sequoia sempervirens), C & N CA coastal native, tallest tree species in the                         world (a small grove of redwoods is at the corner of each block of Mission Bay                                         Commons Park)

6.         Crabapple (Malus sp.), undoubtedly a hybrid of species from Europe and/or Japan (a                               massing of crabapples can be found in the middle of each block of Mission Bay                                         Commons Park)

7.         Chinese elm (Ulmus parvifolia), E Asia (the most common elm in SF; Chinese elms line                              the outside of the east-west walks on both north and south sides of Mission Bay                                       Commons Park)

3rd Street, Mission Bay Blvd North to China Basin St, west side

Bark of Arbutus ‘Marina’

Bark of Arbutus ‘Marina’

These two trees alternate along one or both sides of 3rd St throughout the Mission Bay development:

8.         Mexican fan palm (Washingtonia robusta), Mexico: Baja and Sonora

9.         Marina strawberry tree (Arbutus ‘Marina’), hybrid of Mediterranean species, first introduced in San Francisco - the interesting San Francisco story can be found here

China Basin Street, 3rd St to 4th St, south side

10.       Victorian box (Pittosporum undulatum), E Australia (the dominant street tree along both                           sides of China Basin St, from 3rd to 4th)

Strawberry tree (Arbutus unedo) - leaves and fruit (fruit turns red to signal to to birds that it’s ready to be eaten; when the fruit is edible to birds the seeds inside are mature and after going through the birds’ intestinal tracts, are ready to p…

Strawberry tree (Arbutus unedo) - leaves and fruit (fruit turns red to signal to to birds that it’s ready to be eaten; when the fruit is edible to birds the seeds inside are mature and after going through the birds’ intestinal tracts, are ready to produce a future tree)

Strawberry tree (Arbutus unedo), Mediterranean Basin & Ireland (numerous small trees planted between sidewalk and buildings along China Basin St)

4th Street, China Basin to Channel streets, east side

11.       Japanese pagoda tree (Styphnolobium japonicum; syn. Sophora japonica),                                                       China (the dominant tree along both sides of 4th St, from Mission Bay Blvd North to                                Channel St)

12. 1155 - 4th   Thornless honey locust (Gleditsia triacanthos ‘Inermis’), E USA

Long Bridge Street at 4th, east side

13.       Water gum or small-leaf tristania (Tristaniopsis laurina), E Australia                                                       (SF’s most commonly planted tree; the dominant tree along both sides of Long Bridge St,             from 4th to 3rd)

4th Street, Channel Street to Mission Creek, west side

14.       Saratoga laurel (Laurus azorica ‘Saratoga’), Azores and Canary Islands (selected form                               introduced by Saratoga Horticultural Foundation)

This Eucalyptus stumped all three of us!

Coolibah (Eucalyptus coolibah), Australia (the row here are the only ones in San Francisco!

15.       Monterey cypress (Hesperocyparis macrocarpa), Carmel, CA native (several trees along the             eastern and southern edges of Mission Creek Park)

Channel Street, west of 4th St, north side

16.       Coolibah (Eucalyptus coolibah), Australia (there are 20 or so specimens here. This one stumped us until our friend Sairus Patel from Stanford provided the ID! We think these are the only Coolibahs in San Francisco - but it’s just one one of the 700 or so species of eucalyptus from Australia.

16B      Cajeput tree (Melaleuca quinquenervia), E Australia (feel the spongy bark)

(not numbered)        Western sycamore (Platanus racemosa), California native, uncommon in San Francisco streets (the tall tree on the north edge of the park, past two smaller cherry trees, next to Mission Creek)

Western sycamore (Platanus racemosa) - one of the best in San Francisco!  These trees are riparian (meaning that they love the edges of rivers), which means it’s very happy here on the edge of Mission Creek

Western sycamore (Platanus racemosa) - one of the best in San Francisco! These trees are riparian (meaning that they love the edges of rivers), which means it’s very happy here on the edge of Mission Creek

17.       Peruvian pepper tree (Schinus molle), Peru, Chile (just inside the southern edge of the                               park)

***Where the park path meets the Channel Street sidewalk, please cross Channel carefully; there is no cross walk at this location.

Follow the unnamed pedestrian passageway south from Channel St to Long Bridge St

18.       Red maple (Acer rubrum), Florida to Canada to Mississippi River (dominant tree along the west side of the passageway)

19.       Italian bay tree (Laurus nobilis), Mediterranean Basin (dominant tree along the east side of the passageway; this is the bay leaf of culinary value; crush a leaf to smell it)

***Please cross Long Bridge St carefully

Follow the walkway between the condos and Mission Bay Kids’ Park, south to China Basin St

19B.     African sumac (Rhus lancea, now known in botany as Searsia lancea), S Africa (this row of trees has received some unfortunate pruning to lower the height)

20.       Japanese zelkova (Zelkova serrata), E Asia (a common replacement for American elms, which were decimated by Dutch elm disease in the eastern USA)

Head west on China Basin St but turn into the Kids’ Park on its main walkway

Cork oak (Quercus suber) - the oak that provides the cork for wine bottles

Cork oak (Quercus suber) - the oak that provides the cork for wine bottles

21.       Cork oak (Quercus suber), Spain & Portugal (the bark of this tree provides the cork used in wine bottles)

***Cross China Basin St at the crosswalk to Merrimac Street

Merrimac Street, China Basin St to Mission Bay Blvd North, west side

22.       Callery pear (Pyrus calleryana), China and Vietnam (this tree, and others in the neighborhood, are showing signs of fireblight, a disease that causes leaves to turn brown and entire branches to die; unfortunately, this is one of the dominant trees in the neighborhood)

Mission Bay Blvd North, Merrimac St to 4th S, north side

Fan palms ((Washingtonia x filibusta), hybrid of CA native and Baja species

Fan palms ((Washingtonia x filibusta), hybrid of CA native and Baja species

23.       Japanese zelkova (Zelkova serrata), E Asia (the dominant tree along the pedestrian passageway running north from Mission Bay Blvd)

24.       Brisbane box (Lophostemon confertus), E Australia (planted the full length of Mission Bay Blvd North)

***Take a break at the food truck compound in Spark: good food, cold drinks, and Powder ice cream (what more would one need?). Then continue to Mission Bay Blvd South.

Mission Bay Blvd South at 4th St, south side

25.       Filibusta palm (Washingtonia x filibusta), hybrid of CA native and Baja species (a grove of 12 trees; others are just west of 4th). Lucky that we had Jason, the palm expert with us - no one else could ID these trees as the hybrids!

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***Continue east on Mission Bay Blvd South; turn south at the narrow pedestrian passageway into the UCSF Cardiovascular Research Institute plaza (designed by SF’s Andrea Cochran, one of the country’s top landscape architects)

Cardiovascular Research Institute plaza

26.       Peruvian pepper tree (Schinus molle), Peru, Chile

The tree really (a Peruvian pepper tree - Schinus molle)  is incidental to this park - it’s the grasses that make this park so beautiful…

The tree really (a Peruvian pepper tree - Schinus molle) is incidental to this park - it’s the grasses that make this park so beautiful…

Nelson Rising Lane, north side

A grove of coast redwoods (Sequoia sempervirens).   Redwoods hate wind, and they’re very happy in this wind-sheltered space

A grove of coast redwoods (Sequoia sempervirens). Redwoods hate wind, and they’re very happy in this wind-sheltered space

28.       Ginkgo (Ginkgo biloba), China (numerous street trees on Nelson Rising and along the western edge of the plaza)

**Cross Nelson Rising Lane at the brick cross walk and enter the residential complex

Mission Bay Housing plaza

29.       Marina strawberry tree (Arbutus ‘Marina’), hybrid of Mediterranean species, first introduced in San Francisco (4 trees along the west edge of the plaza) - the interesting San Francisco story can be found here

30.       Coast redwood (Sequoia sempervirens), C & N CA coastal native, tallest tree species in the world (a grove within the complex)

***Exit the residential complex onto Gene Friend Way, a broad pedestrian passage connecting 3rd St to the Mission Bay Conference Center and Owens St beyond. To the east, note the tall rusting steel plates, a sculpture by the renowned artist Richard Serra.

Gene Friend Way, 4th St to Owens St, north side

31.       London plane tree (Platanus x acerifolia), hybrid of E USA                                                                            species and European species (this commonly planted                                                                                urban tree is prone to fungal diseases in SF’s cool foggy                                                                              climate, as evidenced by the disfigured leaves and shoot                                                                             tips on this tree)

Chinese pistache (Pistacia chinensis)

Chinese pistache (Pistacia chinensis)

Sanders Neurosciences Center plaza

32.       Chinese pistache (Pistacia chinensis), W & C China (the female plants are bearing large                             panicles of fruits, and the foliage is taking on its autumn colors)

33.       Japanese maple (Acer palmatum), Korea & Japan

34.       Eastern dogwood (Cornus florida) E North America

35.       Korean dogwood (Cornus kousa), E Asia

Head south on the pedestrian extension of Merrimac St, between the Mission Bay Conference Center and the green lawn of Koret Quad (chalk markings are on the stone seat walls)

36.       Yarwood plane tree (Platanus occidentalis ‘Yarwood’), E North America                                                     (the row of trees on the south side of Gene Friend Way; this selection originated at                                   Sather Tower, UC Berkeley)

dawn redwood (Metasequoia gglyptostroboides

dawn redwood (Metasequoia gglyptostroboides

37.       Canary Island pine (Pinus canariensis), Canary Islands (the grove of tall pines                                            surrounding Koret Quad)

38.       Saucer magnolia (Magnolia x soulangeana), hybrid of E Asian species

Campus Way, 4th St to Owens St, south side

39.       Dawn redwood (Metasequoia glyptostroboides), China (the row of deciduous conifers along the south side of Campus Way; long thought extinct but discovered in China in the 1940s)

Entry plaza for Mission Bay Conference Center, off Owens St, north of Campus Way

Camphor tree (Cinnamomum camphora)

Camphor tree (Cinnamomum camphora)

40. 1675 Owens          Camphor tree (Cinnamomum camphora), E Asia (several trees in the central circle)

41. 1675 Owens          Fastigiate European hornbeam (Carpinus betulus ‘Fastigiata’), NW Europe  to Iran (two rows of narrow upright trees flanking the entry plaza)

Owens Street at Gene Friend St, NW corner

42.       Olive (Olea europaea), Mediterranean Basin (two trees flanking the pedestrian access to the entry garden of Kaiser Hospital)

Gene Friend St, west of Owens St, south side

43.       Ficus (Ficus microcarpa ‘Nitida’), S Asia (a common, albeit problematic,                                                      street tree throughout SF; only a few have been planted in Mission Bay)

Owens Street, southeast from Gene Friend Way, west side

44.       Cajeput tree (Melaleuca quinquenervia), E Australia (young trees, the dominant planting                            along much of Owens St)

Pedestrian Walkway opposite Campus Way, between Owens and B Street

Lombardy poplar(Populus nigra ‘Italica’)

Lombardy poplar(Populus nigra ‘Italica’)

45.       Jacaranda (Jacaranda mimosifolia), Argentina, Bolivia (a small grove in the sunken plaza opposite Starbucks)

46.       Lombardy poplar (Populus nigra ‘Italica’), a variety of Eurasian species (at the corner of B Street and the pedestrian walkway; clearly predates the development of Mission Bay—perhaps the oldest tree in the neighborhood)

47.       Hopseed tree (Dodonaea viscosa), native throughout tropical and subtropical parts of the world (here trained as a tall narrow hedge)

Owens Street, west of Campus Way, east side

48.       Japanese pagoda tree (Styphnolobium japonicum, formerly Sophora japonica), China (solid plantings of this tree on the east side of Owens from Gene Friend Way to 16th, between the sidewalk and the buildings)

16th Street, Owens to 3rd streets, north side

Along this stretch of 16th, we pass a number of trees that are repeats of species seen earlier on this walk, beginning with a continuation of the Japanese pagoda tree wrapping around Genentech Hall. Just before 4th Street is a dense bosque (a formally planted “forest” of trees, from the Spanish word for forest) of European hornbeams. At the corner of 16th and 4th is a lonely coast redwood, unhappy being planted in this concrete desert. Between 4th and 3rd are, in order, a bosque of ginkgos and a more open bosque of Chinese elms in front of SF Kebab.

16th Street, 3rd St to Illinois St, north side

49.       Sweetgum (Liquidambar styraciflua), E USA to Mexico & C America (recently planted,  these trees have been allowed to retain their lower branches; ultimately, those lower                                branches will result in a sturdier trunk than if the branches were pruned off)

16th Street, Illinois to Terry Francois Blvd, south side)

50.       Round-leaf sweetgum (Liquidambar styraciflua ‘Rotundiloba’), E USA to Mexico & Central America (a selection with rounded leaf lobes, quite distinct from the other sweetgums on this street)

Your three tour-leaders!

Your three tour-leaders!

***Don’t miss the spherical sculptures with their mirrored inner surfaces, a captivating piece of public art at the NW corner of 16th St and Terry Francois Blvd.

Terry Francois Blvd, 16th to Warriors Way, west side

Along the east side of Chase Center, the street is lined with more cajeput trees, seen several times earlier on this walk.

***Turn west on Warriors Way, lined with ginkgos on both sides of the street.

Bridgeview Way, Warriors Way to Pierpont Lane, east side

51.       Southern live oak, (Quercus virginiana), coastal SE USA to Mexico and Cuba (becoming a more commonly planted tree in CA, though the jury is still out on its adaptability to the unique climate of SF)

Pierpont Lane, Bridgeview to Terry Francois Blvd

52.       Eastern redbud (Cercis canadensis), Canada, E USA, Mexico (a grouping within the small park at Terry Francois, west of the soaring steel sculpture)

Terry Francois Blvd, Pierpont Lane to Mission Bay Blvd South, west side

53.       Spotted gum (Corymbia maculata), E Australia (an undeservedly rare tree with beautiful bark, well adapted to SF;) planted on both sides of Terry Francois north to Mission   

This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.                     

Landmark Tree Map!

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I’m excited to announce the release of my MAP OF SAN FRANCISCO’S LANDMARK AND RARE TREES. If you click on the link, you’ll go to a map of San Francisco where each of the trees is represented by a dot at its location. Some of the locations are street addresses; where street addresses weren’t available, I used GPS coordinates. Now, for the first time, you can walk or bike or drive around the City with your smart phone , click on the map, and you’ll be able to easily find landmark and interesting trees near you! Most of the trees are quite large (because the dots represent the biggest specimens I know of for each species). Occasionally you’ll find a smaller tree on the map - typically because the tree is very rare in SF and only a couple small specimens exist.

This map will live permanently on the “Landmark Tree” page of this site.

Central Mission #covidtreetour 8-1-20

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For this week’s tour, we return to the Mission District, a fantastic neighborhood for gardens and tree diversity. The tour begins at the corner of 20th and Alabama streets, next to the historic Felix F . Schoenstein & Sons Pipe Organs building.

The walk heads south on Alabama Street to 22nd Street, then west on 22nd almost to Harrison Street, then returns on 22nd to Hampshire Street, then back to York street, north on York to 20th Street, and west on 20th to the start of the tour, ending at the popular Atlas Cafe.

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 59. White arrows on the pavement provide directions whenever a turn is needed. Our trio of tree geeks responsible for this tour is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

Alabama Street, 20th to 21st, west side

1. 3101 - 20th  Snowy River wattle (Acacia boormanii), SE Australia (tree is on Alabama; uncommon in SF)      

Chinese flame tree (Koelreuteria bipinnata) - biggest one in San Francisco!

Chinese flame tree (Koelreuteria bipinnata) - biggest one in San Francisco!

2. 3101 - 20th  River wattle (Acacia cognata), SE Australia

3. 3101 - 20th  Willow wattle (Acacia iteophylla), S Australia

4. 820 Alabama           Chinese flame tree (Koelreuteria bipinnata), S China (this is the city champion for this species - the biggest one in San Francisco!)

5. 828 Alabama           Locust (Robinia x ambigua ‘Idahoensis’), hybrid of N American species

6. 828 Alabama           California lilac (Ceanothus ‘Ray Hartman’), CA native (not even remotely related of lilacs, but a magnificent specimen)

7. 847 Alabama           Trident maple (Acer buergerianum), E Asia (tree is across the street)

8. 890 Alabama           Carob (Ceratonia siliqua), E Mediterranean Basin (seed pods can be used to make a chocolate substitute—though not recommended for true chocolate  lovers)

Alabama Street, 21st to 22nd, east side, then west side

9. 901 Alabama           Ginkgo (Ginkgo biloba), China (row of 5 trees alongside the Boys & Girls Club

10. 925 Alabama         Victorian box (Pittosporum undulatum), E Australia (an uncommonly tall specimen)

11. 937 Alabama         Flowering cherry (Prunus serrulata), Japan

12. 951 Alabama         Mock-orange (Pittosporum tobira), Japan, China, & Korea (a remarkable specimen)

Please cross the street carefully.

13. 926 Alabama         Southern magnolia (Magnolia grandiflora), SE USA (across the street)

14. 998 Alabama         African fern pine (Afrocarpus gracilior), E & S Africa

15. 2850 - 22nd            Australian willow (Geijera parviflora), E & SE Australia (2 trees are on Alabama; this tree does best in the warmer neighborhoods of SF)

At 22nd Street, turn right and head west on 22nd.

22nd Street, west of Alabama for half a block, north side

16. 2850 - 22nd            New Zealand Christmas tree, pōhutukawa in Māori (Metrosideros excelsa), New Zealand (widely planted in SF where it loves the climate)

17. 2858 - 22nd            Interior live oak (Quercus wislizeni), CA native (2 trees; rare in SF)

18. 2866 - 22nd            Brush cherry (Syzygium australe), E Australia

Please cross the street carefully; you’ll backtrack on 22nd towards Alabama.

22nd Street, west of Alabama, south side

19. 2859 - 22nd            Washington thorn (Crataegus phaenopyrum) Eastern USA

20. 2855 - 22nd            Red maple (Acer rubrum), Eastern USA: Florida to Canada to Mississippi River

21. 2839 - 22nd            Marina strawberry tree (Arbutus ‘Marina’), hybrid of Mediterranean species, first discovered in San Francisco and many think was brought to SF during the Pan American exposition of 1915. The late Victor Reiter of Cole Valley had a hand in the introduction of the tree to the nursery trade in the 1980s - that interesting San Francisco story can be found here.

22. 2826 - 22nd            Queen palm (Syagrus romanzoffiana), Brazil (tree is across the street)

23. 2819 - 22nd            Japanese maple (Acer palmatum), Korea & Japan

24. 2807 - 22nd            Chinese pistache (Pistacia chinensis), W & C China

Sweetgum (Liquidambar styraciflua)

Sweetgum (Liquidambar styraciflua)

25. 998 Florida            Sweetgum (Liquidambar styraciflua), E USA to Mexico & C America (tree is across the street on 22nd)

22nd, Alabama to Florida, south side

26. 2771 - 22nd            Carob (Ceratonia siliqua), E Mediterranean Basin (2 uncommonly large trees)

Bryant Street, south of 22nd, west side

27. 2400 Bryant           Aleppo pine (Pinus halepensis), Mediterranean

Bryant Street, north of 22nd, east side

Century plant (Agave salmiana)

Century plant (Agave salmiana)

28. 2397 Bryant           Brisbane box (Lophostemon confertus), E Australia

22nd Street, Bryant to York, north side

29. 2397 Bryant           Century plant (Agave salmiana), Mexico (this succulent is on 22nd; it is not a tree at all, but the tall flower stalk is tree-like in form)

30. 2397 Bryant           Chinese elm (Ulmus parvifolia), E Asia (tree is on 22nd)

31. 2397 Bryant           Breede River yellowwood (Podocarpus elongatus) S Africa (tree is on 22nd)

gold medallion tree (Cassia leptophylla)

gold medallion tree (Cassia leptophylla)

32. 2712 - 22nd            Water gum or small-leafed tristania (Tristaniopsis laurina), E Australia  (one of the top two most planted trees in SF)

33. 2700 - 22nd            Lemon tree (Citrus limon), S Asia

22nd Street, east of York, north side

34. 2671 - 22nd            gold medallion tree (Cassia leptophylla), S America (tree is across the street, in full bloom). This tree is undeservedly rare in SF - look at the yellow blooms (photo adjacent) - we need more of these!

35. 2662 - 22nd            Yarwood plane tree (Platanus occidentalis ‘Yarwood’), Eastern North America (originated at Sather Tower, UC Berkeley)

York Street, 22nd to 21st, east side

Cajeput tree (Melaleuca quinquenervia) trunk

Cajeput tree (Melaleuca quinquenervia) trunk

36. 2680 - 22nd            Cajeput tree (Melaleuca quinquenervia), E Australia (3 trees on York)

37. 983 York    Evergreen pear (Pyrus kawakamii), Taiwan (this tree, and others in the neighborhood, are showing signs of fireblight, a disease that causes leaves to turn brown and entire branches to die)

38. 979 York    English hawthorn (Crataegus laevigata), Europe & N Africa

39. 975 York    Purple-leaf plum (Prunus cerasifera), Eurasia (formerly SF’s most planted                                                   tree)

40. 939 York    Ginkgo (Ginkgo biloba), China

41. 917 York    Victorian box (Pittosporum undulatum), E Australia

42. 2681 - 21st             Jujube (Ziziphus jujube), Middle East to China (tree is on York; very rare in San Francisco - this is one of only two we know of in SF; fruits are edible and tasty)

21st Street, York to Hampshire, south side, then north side

43. 2671 - 21st             Silk oak (Grevillea robusta), E Australia

44. 2663 - 21st             Strawberry tree (Arbutus unedo), Mediterranean Basin and southwest Ireland (the ice age almost pushed it out of Ireland, but not quite!)

champak (Magnolia champaca) flower - great fragrance

champak (Magnolia champaca) flower - great fragrance

Please cross the street at the corner.

45. 2670 - 21st             champak (Magnolia champaca) S & SE Asia (a great specimen of a rare tree in SF; flowers are fragrant)

York Street, 21st to 20th, east then west side

46. 891 York    Mimosa (Albizzia julibrissin), Iran (2 more trees are across the street)

47. 889 York    Mediterranean fan palm (Chamaerops humilis), Mediterranean Basin

48. 833 York    Three palms from back to front, alongside the driveway: pygmy date palm (Phoenix roebelenii), S China, Laos, Vietnam; king palm (Archontophoenix cunninghamii), E Australia (3 trees, one very slender; nikau palm (Rhopalostylis sapida), New Zealand - plus: giant bird-of-paradise (Strelitzia nicolai), S Africa

49. 884 York    Queen palm (Syagrus romanzoffiana), Brazil (2 trees are across the street)

50. 823 York    Coppertone Indian hawthorn (Raphiolepis ‘Coppertone’), hybrid of E Asian species (new spring growth is coppery in color)

51. 819 York    Rubber trees (Ficus elastica ‘Decora’), S & SE Asia

Please cross the street carefully.

northern red oak (Quercus rubra)

northern red oak (Quercus rubra)

52. 850 York    Sweet michelia (Magnolia doltsopa), Himalayas (fragrant flowers appear in winter)

53. 844 York    Northern red oak (Quercus rubra), E North America

54. 810 York    Bronze loquat (Raphiolepis deflexa, syn. Eriobotrya deflexa), S China to Vietnam

20th Street, York to Bryant, south side

55. 800 York                Akebono flowering cherry (Prunus x yedoensis ‘Akebono’), Japan (3 trees on 20th)

56. 2829 - 20th            Ficus (Ficus microcarpa ‘Nitida’), S Asia (a common, although problematic, street tree throughout SF)

20th Street, Bryant to Florida, south side

Mexican fan palm (Washingtonia robusta)

Mexican fan palm (Washingtonia robusta)

57. 2921 York              Mayten (Maytenus boaria), Chile

58. 2925 York              Lemon bottlebrush (Callistemon citrinus), E Australia

59. 2931 York              Mexican fan palm (Washingtonia robusta), Mexico (2 tall palms inside the fence)

20th Street, Florida to Alabama, south side

Entire block                 Glossy privet (Ligustrum lucidum), S China (tallest trees across the street, all in flower)

This tree tour ends at the corner of Alabama and 20th streets, across the street from its beginning and right next to the Atlas Cafe, now open for sidewalk seating.

This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.

20th Street mural

20th Street mural


 

 

"A Connoisseur's Collection on the Slope of Mount Sutro"

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Here’s a piece on the Victor Reiter family garden on Stanyan Street, excerpted from The Gardens of San Francisco, Joan Hockaday, Timber Press 1988, titled “A Connoisseur’s Collection on the Slope of Mount Sutro”:

Every city has its foremost plantsman, one knighted in inside circles as the expert to consult on matters green and growing.  Victor Reiter was San Francisco’s appointed master and he carried his title with a firm but tender grasp, only occasionally looking up from his breeding journal to realize the whole town was talking about his botanical and horticultural prowess. 

Mr. Reiter’s sheltered and sloping one-acre garden at the foot of Mt. Sutro is like no other in this city; the size alone, combined with his extraordinary plant collection, made this a “must see” for visiting garden enthusiasts.  The octogenarian’s passing during production of this book only sharpens the debate over whether his garden – or any garden – is but one man’s creation, destined for a new life of decline or redesign, and, further, whether garden preservation should occupy a more prominent role in conservation efforts, as it does abroad. 

Fortunately for San Francisco, this spacious garden is now in the hands of Mr. Reiter’s widow and children who share his keen interest in the land and its upkeep.  For one brief moment, however, on a crisp fall 1986 day soon after Mr. Reiter’s passing, the garden was in the hands (and knees) of a most distinguished clean-up crew – one San Francisco Parks chief, one Pacific Horticulture magazine editor, and dozens of others untitled but no les expert – gathered to help family members keep weeds at bay for one more season.  It was an astonishing, affectionate outpouring in tribute to Mr. Reiter.

Hundreds of rare plants once thrived here; many survive his years of collecting.  Collecting was, for Mr. Reiter, an all-consuming hobby, a chance to bring back a one-of-a-kind specimen, a chance to shelter outdated, unpopular hybrids until fashions changed once again.  He had the space, the knowledge, and, finally, the horticultural connections to make collecting a joy.  Each plant has a fascinating history behind its place in this garden – smuggled alpine seeds from the bank president’s wife, rare cemetery tree sips, and everywhere gifts and exchanges from friends.  These stories, in later years, became the focus for garden visitors, became almost as important as the plants themselves. 

A turning point for this garden – and gardener – came with an unexpected chill in December 1932.  In Mr. Reiter’s words:  “The big Freeze drove the dirt gardeners out of their burrows most successfully … the unprecedented icy blasts from out of the Arctic swept over Northern California leaving its gardens ravaged and its gardeners broken hearted.”  Thus the California Horticultural Society was born out of resolve of Mr. Reiter and other early participants to “pattern some of the features of our fledgling after that great organization – the Royal Horticultural Society – whose objective is the advancement of horticulture in all its branches.”

While some gardeners collect the biggest and brightest new plants, Mr. Reiter wanted the smallest, most subtle, oldest breeds. For new plants, he bred his own, on site, then offered them for sale in his LaRochette nursery, which his father started years before.  Roses were the specialty in the early LaRochette days before Mr. Reiter Jr. advanced to strictly temperate climate specialties, including that most colorful and tender of San Francisco plants – fuchsias.  The 1952 LaRochette catalogue is a fuchsia connoisseur’s prize in itself, with its enthusiastic listing of introductions that are now scattered in gardens all over San Francisco and elsewhere.  He set a goal to breed a fine white fuchsia which appeared in 1949: Fuchsia ‘Flying Cloud’ – a double rosy white.  He then moved on to challenges among the eucheras, echeverias, correas and brooms.  Remnants of LaRochette Nursery appear everywhere in this garden – from the masses of fuchsias haphazardly strewn about the upper garden to the lathhouses and greenhouse foundations near the once-bustling ‘office’ behind the house.

A magnificent tree – a wedding present from a British well wisher – now dominates the upper garden.  When the Magnolia campbellii mollicomata is in bloom in mid-February, friends father to toast its magnificence.  In Victor Reiter’s opinion, this Himalayan Magnolia tree, with its enormous, clear, deep pink blossoms, was the handsomest in the city.  The tree arrived as a three-year old and had to be rerouted through Canada along the way. 

So rarified is the atmosphere in this plant collection beneath Mt. Sutro, one is immediately tempted to inquire about seeing the family ‘jewels’ – Rhododendron ‘Victor Reiter Sr.’, Fuchsia ‘Mrs. Victor Reiter’ Echeveria ‘Carla Reiter’ – until it becomes clear that this unassuming family would prefer showcasing other families’ gems.  Besides, having a plant named in one’s honor is a mixed blessing; if the plant does poorly, the honoree is blamed, rather than the supplier, or the real culprit, which might be a snail or a slug.  For this reason, and others, Mr. Reiter preferred to name his new plants according to color, shape or size – characteristics rather than characters.

Each plant, each family has its colorful history at every turn in the garden.  Sadly, Mr. Reiter never wrote all the stories down, never strolled through his vast garden with tape recorder in hand, so some memories are lost forever – a lesson other collectors might note.  Mr. Reiter’s tremendous photo collection, however, equals the best of family albums and chronicles his life work on 35 mm slides, many on permanent view at Strybing’s Horticultural Library.

This private garden could hardly be duplicated today – as with any fine collection, it took years to gather and adapt.  To see so many different flowering plants in one unscientific setting is enough to send the uninitiated along the collecting path at once; for the initiated, the paths led to Utopia.  Unfortunately, because Mr. Reiter collected the tiniest species, they are the first to succumb to the weeds, the first to be smothered under larger less desirable plants nearby. 

Nature, ever so quickly, closes in.  Cities, just as quickly lose their living collections.

Richmond/Seacliff #covidtreetour 7-25-20

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This week’s tour is just east of Lincoln Park in the Richmond District and neighboring Seacliff, a neighborhood of beautiful homes and richly planted front gardens. The tour begins and ends at the corner of 31st Avenue and California Street. Our trio is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

The walk heads west on California Street to 32nd Avenue, then north on 32nd for half a block, crosses 32nd and returns to California, then heads east on California to 31st, north on 31st to Sea View, east on Sea View to 30th, north on 30th to Lake Street, then returns south on 30th to California, and back to its beginning at 31st.

red alder (Alnus rubra) - the City’s largest!

red alder (Alnus rubra) - the City’s largest!

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 28. White arrows on the pavement provide directions whenever a turn is needed.

California Street at 31st Avenue, NW corner

1. 295 - 31st     Red alder (Alnus rubra), CA to Alaska, a SF native! This is a gorgeous tree, and we think it’s a “City Champion” - the biggest of this species in in San Francisco.   Head west on California Street, then turn right on 32nd Avenue.

32nd Avenue, north of California, east side

2. 298 - 32nd   Canary Island date palm (Phoenix canariensis), Canary Islands (2 trees) This is the same palm that lines the Embarcadero and upper Market Street, and there are many Canary Island palms in the Dolores Street median.

3. 270 - 32nd   Purple-leaf plum (Prunus cerasifera), Eurasia. This was formerly SF’s most planted tree, but its popularity has faded in the past decade.

mayten (Maytenus boaria)

mayten (Maytenus boaria)

4. 262 - 32nd   New Zealand Christmas tree, pōhutukawa in Māori (Metrosideros excelsa), New Zealand. New Zealand Christmas trees are widely planted in SF, as the tree loves our climate. It is one of the best fits for the western side of the City where winds and sandy soils are a challenge for other trees.

5. 244 - 32nd   Mayten (Maytenus boaria), Chile (a well-pruned specimen)

6. 214 - 32nd   Loropetalum chinense, China (typically grown as shrubs, these have been beautifully pruned into small trees)

7. 200 - 32nd   Ceanothus ‘Ray Hartman’, CA native (two well-grown specimens)

Monterey pine (Pinus radiata)

Monterey pine (Pinus radiata)

***Please cross the street carefully; the tour will backtrack towards California Street from this point.***

32nd Avenue, north of California, west side

8. 201 - 32nd   Monterey pine (Pinus radiata), Año Nuevo, Monterey, Cambria, CA native, most widely planted coniferous tree in the world (mostly for lumber; this is a particularly well-pruned specimen)

9. 231 - 32nd   Ficus (Ficus microcarpa ‘Nitida’), S Asia. Ficus is a very common street tree throughout SF, but it isn’t frequently planted any more, so you don’t see many young ficus trees around the City.)

10. 247 - 32nd Silver maple (Acer saccharinum), E North America

silver maple (Acer saccharinum)

silver maple (Acer saccharinum)

11. 259 - 32nd Italian bay tree (Laurus nobilis), Mediterranean Basin

12. 261 - 32nd Peppermint willow (Agonis flexuosa), SW Australia

13. 271 - 32nd Red ironbark (Eucalyptus sideroxylon), E & SE Australia

14. 271 - 32nd Silver dollar gum (Eucalyptus polyanthemos), E Australia

15. 273 - 32nd Lemon bottlebrush (Callistemon citrinus), E Australia

16. 291 - 32nd Primrose tree (Lagunaria patersonii), Australia & S Pacific Islands

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17. 291 - 32nd Japanese podocarpus (Podocarpus macrophyllus), China & Japan (used here as a hedge between properties)

***Back at California Street, note the magnificent mosaic steps at the western end of California Street - they are worth a detour! Then turn cross California Street and head east on the north side of California.***

California Street, 32nd to 31st, south side

18. 6945 California      London plane tree (Platanus x acerifolia), hybrid of E USA species and European species (planted along California Street from Nob Hill to Lincoln Park; many of them are pollarded regularly to control their size)

19. 6935 California     Norfolk Island pine (Araucaria heterophylla), Australia, Norfolk Island (it’s the tall “Christmas tree” within the block across the street). At 31st Avenue, turn right and head south to the Dupont Tennis Courts.

Across the street from 349 - 31st Avenue Lilly pilly (Syzygium smithii, formerly Acmena smithii), E Australia. This is an extremely rare tree on the streets of San Francisco. The colorful fruit are edible, though rather tasteless; exceptional specimens can be seen in the SF Botanical Garden. From here, backtrack on 31st Avenue, cross California Street and head north on 31st on the east side of the street.

31st Avenue, California to Sea View, east side

20. 290 - 31st   Blue Atlas cedar (Cedrus atlantica ‘Glauca’), Morocco & Algeria

21. 282 - 31st   New Zealand Christmas tree, pōhutukawa in Māori (Metrosideros excelsa), New Zealand. When you reach Sea View Terrace, turn right.

silver dollar tree (Eucalyptus cinerea)

silver dollar tree (Eucalyptus cinerea)

Sea View, 31st to 30th

22. 55 Sea View          Mexican weeping pine (Pinus patula), Mexico (the tree with drooping needles, across the street, on the SW corner of Sea View and 31st)

23. 40 Sea View          Silver dollar tree (Eucalyptus cinerea), Australia (tree with silvery foliage on the north side of the street). This is a very rare tree in San Francisco, and it took the three of us some time to come to a conclusion on the ID of this tree!

24. 25 Sea View          Water gum or small-leafed tristania (Tristaniopsis laurina), E Australia (several trees in a row; one of the most planted trees in SF). At 30th Avenue, turn left and head to 2850 Lake (at the corner of 30th).

Lake Street at 30th, NE corner

25. 2850 Lake              Red-flowering gum (Corymbia ficifolia), SW Australia (magnificent aged specimens on both Lake and 30th; this tree loves SF’s climate)

red flowering gum (Corymbia ficifolia)

red flowering gum (Corymbia ficifolia)

26. 2850 Lake              Hybrid tea tree (Leptospermum ‘Dark Shadows’), Australia (flowering in the shadows near the corner of the house). Now backtrack on 30th and head south, on the east side of the street.

30th Avenue, Lake to California, east side

27. 232 - 30th               Blackwood acacia (Acacia melanoxylon), SE Australia (4 trees; the largest is among the most shapely in SF)

28. 286 - 30th               Saucer magnolia (Magnolia x soulangeana), hybrid of E Asian species; also a Southern magnolia (Magnolia grandiflora), SE USA (across the street)

This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.

Red Flowering Gums in Bloom

Red flowering gum (Corymbia ficifolia) in front of Mission High School on 18th Street near Dolores

Red flowering gum (Corymbia ficifolia) in front of Mission High School on 18th Street near Dolores

When my brother Mark from upstate New York visited me in July a couple of years ago, I still remember driving with him on a street in the Mission, when he asked, “What’s THAT tree”??!! July and August in San Francisco is the time when red flowering gums (Corymbia ficifolia) are out in spectacular bloom. Brilliant red or orange, pink or white - the tree’s flowers come in many colors, and the blooms present in large inflorescenses that can often cover most of the tree’s crown. Red gums cannot be easily reproduced from cuttings, and when reproduced from seed, nature rolls the genetic dice, so the flower color won’t necessarily match that of the parent tree. Large, smooth and woody seed capsules (which look like the bowl of a pipe) form after the flowers, and hang onto the tree for many months, often until the next year’s flowers are in bloom. Red gums are well adapted to San Francisco’s cool coastal climate, and they thrive almost everywhere in the City. In fact, the largest red gum in the United States is in San Francisco’s St. Francis Woods neighborhood, at the corner of Monterey Boulevard and Junipero Serra Boulevard. The native range of the red flowering gum is a very small area in western Australia, southeast of Perth.

Sadly, the City has virtually stopped planting these magnificent trees - very very few of them have been planted in the last decade. Why? Because they have very wide trunks, require a big sidewalk cut, and probably also because they eventually require more maintenance than other trees (as most big trees do). But those aren’t good reasons to stop planting red flowering gums entirely - there are plenty of places in the City with enough room for Corymbia ficifolia. Let’s not give up on this these magnificent trees!

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Victor Reiter, Jr.

Victor Reiter, Jr. - photo credit George Waters

Victor Reiter, Jr. - photo credit George Waters

Victor Reiter Jr. (1903-1986) was San Francisco‘s most famous grower, collector, and hybridizer of plants and trees for many years, and he was one of the founders of the California Horticulture Society in the 1930s.  He was responsible for introducing many hybridized varieties of plants to the gardening world, including echeveria, abutilons, Heuchera, and thymes, but he was particularly well known for the creation of many different varieties of fuchsias.  Despite his importance to horticulture in California, it’s surprisingly hard to find information on Reiter online – perhaps because all of his work happened well before the online era.  This blog post is an attempt to address that oversight.  I’ve tried to gather in one place some details of the life of one of the most important horticulturalists in California from the 1930s through the 1980s. 

Reiter’s father, Victor Reiter Sr., was the manager of the Hotel Oakland in Oakland and, later, of the Palace Hotel in San Francisco (he was manager at the Palace in 1923, the year President Harding died while staying at the hotel).   Reiter Sr. moved the family to 1195 Stanyan Street in 1926.  Lots on the west side of Stanyan Street were being sold off by the family of Adolph Sutro, the silver baron and former San Francisco mayor who owned the entire Sutro Forest and adjoining neighborhoods at the turn of the century.  (The 1930 census shows that the Reiters’ next door neighbors at 1199 Stanyan were Henrietta Sutro, Adolph’s daughter-in-law and her son Adolph Sutro.)  The family’s interest in plants began to grow with Reiter’s Sr.’s retirement, when he enthusiastically began growing (and hybridizing) roses in the then-small backyard at that address. 

Victor Reiter Jr. was in his late 20s in 1932, when a freak cold snap led to the founding of the California Horticultural Society.  In early December, temperatures plunged well below freezing for several days, and many plants, including established trees, were killed outright.  From A History of Cal Hort, Pacific Horticulture, Fall 2001:

Victor Reiter, Jr. in his garden - photo credit California Horticultural Journal, April 1968

Victor Reiter, Jr. in his garden - photo credit California Horticultural Journal, April 1968

A number of horticulturally minded people affected by the freeze—nurserymen, estate owners and their gardeners, academics from the University of California at Berkeley, and backyard gardeners—gathered in a North Beach restaurant to assess the damage. After a few meetings, rapport was established and a permanent society emerged as the California Horticultural Society, usually known today as Cal Hort. … Victor Reiter, Jr. guided the society from its founding until his death. He held many official positions including president and was a founder in 1968 of the Pacific Horticultural Foundation.”

Reiter, himself, in 1961, wrote a fascinating history of the early days of the California Horticultural Society, in which he played an important role:  https://calhortsociety.org/about/cal-hort-first-31-years/ Six years later, the Society gave Reiter its annual award (I think it was a kind of “lifetime achievement award”), and published a “brief outline of the award recipient’s background”.

In the early 1930s, the Reiter family acquired an additional acre of land adjoining their backyard from the Sutro heirs, a triangle-shaped lot wedged between Stanyan Street, Woodland Avenue, and the Sutro Forest.  In 1937, the Reiters established a commercial nursery (known as the “La Rochette Nursery”) on the newly acquired parcel.  The nursery gained fame among plant enthusiasts over the next 25 years as the source of rare and exotic plants that Victor collected through purchases and exchanges with sources throughout the world.  Reiter not only collected plants, but also created new cultivars by breeding and hybridizing plants; the nursery was especially famous for its fuchsia introductions.  The commercial nursery was closed in 1963 (one story, not verified, is that the City of San Francisco notified the family that a commercial nursery could not be permitted in a residential area), but Reiter continued to plant and care for the specimen plants and trees on the property until his death.

The Reiter family garden in Spring 2020

The Reiter family garden in Spring 2020

The Reiter garden is still in the family’s hands; Victor’s wife Carla died in 2013, but two of Reiter’s children still reside on the west side of Stanyan Street and have done a beautiful job maintaining the plantings.  The garden’s large Campbell’s magnolia - a 1947 wedding present to Victor and his wife from an English well wisher - is a centerpiece, with beautiful pinkish-white flowers blooming every January.  The garden has a number of remarkable specimens from New Zealand, including cabbage palms (Cordyline australis), northern ratas (Metrosideros robusta) and a rare yellow-flowering New Zealand Christmas tree (Metrosideros excelsa ‘Aurea’).  The property is private, but you can catch a glimpse from the Sutro Forest trail that starts just a few feet above the corner of 17th and Stanyan streets; the garden is visible on the right after a short walk into the forest.

Arbutus X ‘Marina’ close-up

Arbutus X ‘Marina’ close-up

Reiter had an important role in the introduction of the hybrid strawberry tree - Arbutus X ‘Marina’, now one of San Francisco’s most commonly planted trees.  The origin of this hybrid is uncertain, but it’s thought to be a hybrid of two European species, and many have speculated that the tree arrived in 1915 for the Panama–Pacific International Exposition as part of a consignment of plants from the Italian government.  Subsequently a few plants were propagated by Charles Abrahams at his Western Nursery on Lombard Street in the Marina district.  When that nursery closed in 1933, a boxed plant was purchased by Strybing Arboretum, then under director Eric Walther.  Victor Reiter took some cuttings from that tree in 1933, and planted one in his garden in 1944, which eventually became the largest Arbutus ‘Marina’ in existence (approximately 40’ tall).  The Saratoga Horticultural Foundation obtained some cuttings from the tree in the Reiter garden, and introduced the tree to the California nursery trade in 1984, naming it Arbutus X “Marina’, commemorating the location of the Western nursery and as a tribute to its owner and one of California’s early plantsmen, Charles Abrahams.

Yellow-blooming New Zealand Christmas tree (Metrosideros excelsa ‘Aurea’) at 1221 Stanyan Street

Yellow-blooming New Zealand Christmas tree (Metrosideros excelsa ‘Aurea’) at 1221 Stanyan Street

The Reiter family is also responsible for an official City of San Francisco “landmark tree” at 1221 Stanyan Street, near the corner of 17th Street. The large New Zealand Christmas tree (Metrosideros excelsa) at that address is (in this author’s opinion) the best specimen of the species on San Francisco’s streets.  New Zealand Christmas trees aren’t unusual in San Francisco – there are many hundreds of them in the City, popular for their showy red bottlebrush flowers. And indeed, all of the many hundreds of New Zealand Christmas trees on San Francisco’s streets have red flowers — except for this one, which blooms every May and June with spectacular yellow flowers.  The story of this tree goes back to 1940, when there was a natural mutation of the species on tiny Motiti Island in the Bay of Plenty off New Zealand’s north coast.  Reiter was one of the first Californians to obtain a cutting after the variety was introduced to cultivation later that decade (possibly from Strybing Arboretum, which still has a mature yellow-blooming specimen near the Arboretum’s entrance).  The family planted the curiosity on the street in front of their home at this address, and, more than 70 years later, the tree is thriving - a beautiful mutant with an amazing pedigree. 

A final post-script: as I said at the start of this post, if you google “Victor Reiter”, you won’t find much about the man and his accomplishments. What you will find is result after result of plant cultivars: Armeria ‘Victor Reiter’; Cistus ‘Victor Reiter’; Abutilon ‘Victor Reiter; Thymus ‘Victor Reiter’ (which grows in our back yard, incidentally) and so on. Although Reiter was famous for his skill in breeding plants, I don’t think these are cultivars that he created - rather, they were created by others and named after Reiter to honor him. An appropriate way to honor a man who did so much to further California horticulture.

California Horticultural Journal - April 1968 - Recognizing Victor Reiter, Jr.

[ The following is an article from California Horticultural Journal, April 1968 (Vol. XXIX, No. 2)]

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The 1967 Annual Award of the California Horticultural Society “for outstanding and meritorious contribution to horticulture in California” was presented to Victor Reiter, Jr. at the Society’s annual dinner.  Following established custom, a brief outline of the award recipient’s background is published in the Journal.  [NOTE: here’s an excerpt from a UC Berkeley 1989 oral history of F. Owen Pierce, indicating that Reiter wrote the history below himself: “When Roy Hudson was made the director of Strybing Arboretum we had just had an article in the Journal about Vic Reiter. Vic had been given the annual award from Cal Hort, and Vic wanted to write up his own account of his life. He had put a lot of thought into it, and he'd rather do it right himself than have anybody else do it wrong, [laughing] Roy, I think, was envious of that, so when he became the director of the Strybing he brought in a long article by himself telling his life story.”]

FROM RUBBLE TO RUBUS - VICTOR REITER, JR.

Victor Reiter, Jr. was born at 1318 O’Farrell Street, in San Francisco, on April 26, 1903.  His parents were of Luxembourger ancestry, paternally (Victor Reiter, Sr.) and of California native French, maternally (Augusta Pagès).  All of his sixty-five years have been spent in San Francisco, except for a three year defection to the city of Oakland in 1912, and for six months in the remote wilds of Orinda “Park’ in 1908. 

His first horticultural interests appeared, in 1909, at 1455 Sacramento Street, where a small backyard plot was assigned to “Bebe.”  Here he grew marijuana from a canary bird seed mixture and sunflowers from parrot seed.  This was augmented with a white polyanthus rose, four o’clocks (Mirabilis), Cestrum aurantiacum, mignonette, and apricot seedlings, all of which he had gleaned from the surrounding rubble-filled lots which remained after the 1906 fire and earthquake.  He also possessed a potato plant grown from peelings and a clump of Swiss chard which the Italian maid “Rose” had brought from her relatives on Telegraph Hill.  A “Big Boy”, about nine years old, recently arrived from the country, told him that farmers grafted fruit trees. This so intrigued “Bebe” that he took tips from his apricot seedlings and tied them into stems of the husky milkweeds that abounded in the area.  The results of this effort, which had been insufficiently researched, survived for three long days – foggy ones. 

During the school years that followed, interest in plants lay almost fallow.  In 191 he did grow a vegetable garden of red lettuce and white carrots in an old plasterer’s mortar box, but no real horticultural interest developed until after his graduation from the University of California in his twenty-third year (1926). 

Serious interest in plants started when the Reiters built a home at 1195 Stanyan Street in 1926.  Here Victor Reiter, Sr. (a retired hotel-man) enthusiastically began growing roses in the relatively small back garden.  The land was good and the roses prospered.  Victor, Sr. and Jr. were convinced that the rose was the ultimate in flowering plants.  They favored the smaller, more single kinds and, through hybridizing, Victor Sr. produced a Rosa abyssinica X R. ‘Cecile Brunner’ F3 hybrid, which he named Dr. Gallwey Improved.  This is an extraordinarily vigorous non-remontant white climber, worthy of landscape planting today.

During those early rose years three things happened to influence Victor’s development.  The Reiters acquired an adjacent acre of Sutro Forest, and Victor, Jr. met Lewis Allen and Eric Walther, both of Golden Gate Park.  There had always been relationships with John McLaren and the Park; “Uncle John” had actually intimated that there might be room in the Park for Victor, Jr.  However, the wonders of horticulture, botany and all its allied facets had never coalesced into a meaningful whole until the warm friendship of Lewis Allen and Eric Walther supplied the leaven.

Lewis Allen was assistant to Peter Rock and, later, manager of the nursery in Golden Gate Park.  Allen was an avid collector, with a fabulous collection of rock-garden plants at his Sunset District home.  As an expert grower, he had been responsible for the germination of the seeds gathered by various plant collecting expeditions to which the park subscribed.  The nursery was literally groaning with thousands of new plants, of which surplus seedlings were available.  Every Sunday afternoon Eric and Victor visited Lewis Allen’s garden and Victor listened as these two dedicated men shared their vast knowledge with their young disciple.

The avalanche of new plants, new names and new outlooks called for rethinking, reappraisal and study.  The Journals of the Royal Horticultural Society, the Gardener’s Chronicle and Bailey’s Cyclopedia were devoured.  Then, Eric introduced Victor to Alice Eastwood at the California Academy of Sciences, which had a treasury of botanical books.  Another avalanche of knowledge ensued. 

Simultaneously, Victor had started a mini-modest, one-man nursery, on the Sutro Forest land, which he named “La Rochette.”  The treasures that had been acquired from Lewis Allen, from the Park and by direct purchase were multiplied, and seeds from Switzerland, Germany, New Zealand, Tasmania, South Africa and Mexico were germinated.  Later, importations of plants were made from abroad notably from England, Ireland and France.  New alpines, dwarf conifers, fuchsias and other shrubs came from the British Isles; gazanias, watsonias, and succulents from the Cape; shrubs and alpines from New Zealand and Tasmania; geraniums from France; echeverias, fuchsias, hawthorns, montanoas from Mexico; Fuchsia triphylla from Santo Domingo; aeoniums, echiums, statice, from the Canaries; armerias, alpines and bulbs from Morocco; helleborus and cyclamen from Majorca; even rose seeds from the USSR.  In addition, plants were received from the USDA, Brooklyn Botanic Garden Pierre S. du Pont’s Longwood Garden, et. A.  Lester Rowntree supplied native California seeds and even the aging Carl Purdy of Ukiah brought plants to swell the collections on Stanyan Street.  Plants from the University of California Botanic Garden were also available, supplying new “loot” from South America.  A glorious glut of plants was being accumulated. 

In addition, there was Eric Walther’s formidable knowledge and the pre-Strybing Arboretum collection of plants at the Water Works in the Park, from which Victor had the privilege of getting cuttings.  Items such as the first of the Magnolia campbelli clones came from there.  Many of these items were difficult to multiply vegetatively, so Victor had to improve his propagating and his grafting skills far beyond those he had employed on the apricots in 1909.  He built the first GE electric cold frames in San Francisco and early readers of this Journal may remember his article on the use of auxin-like substances to stimulate the rootings of cuttings.[1]

In addition to Eric’s Park responsibilities as entomologist, botanist, plantsman and arboretum developer, he had an avocation – an interest in succulent plants.  This brought another world into the picture in the person of Charles Abraham, of the Western Nursery.  At Eric’s suggestion, Victor visited the then very old “Charlie.”  In the decaying, neglected old nursery on Lombard Street lurked many hidden beauties.  The old man, recognizing the eagerness of his young visitor, uncovered his most precious items.  For a token price of five dollars Victor left the Western Nursery with a gardener’s ransom.

James West had discovered succulents at Abraham’s nursery, where he probably also discovered Eric.  Walther and West became active in the budding Cactus and Succulent Society of America, which headquartered in Los Angeles, and Victor tagged along.  Within two years, La Rochette had accumulated hundreds of succulents and was producing new named clones of hybrid echeverias.  The nursery trade still propagates some of these.[2]

Other succulents, particularly species of Rochea, were intercrossed in the hope of producing an earlier flowering Rochea coccinea type suitable for florist production on the California seacoast but, in the midst of all this succulent endeavor, the first tragedy struck – the Big Freeze of December, 1932 swept across California, obliterating all the outdoor breeding stocks of all the tender plants in the nursery, including most succulents.  La Rochette never fully recovered from the Big Freeze in its tender plant department.  The discouragement of losing years of collecting and breeding work in a single week is not conductive to repeat performances.

Members of the California Horticultural Society will remember that it was this same 1932 freeze that started the Society with a meeting of discouraged Bay Area gardeners in 1933.  The story of the California Horticultural Society has already been recorded in these pages.[3]

This meeting started a new chapter for Victor Reiter, Jr.  Dr. Sydney B. Mitchell, Dean of the Library School at the University of California, in Berkeley, and certainly the dean of California gardeners, became the Society’s first president.  He was a learned gardener, author of western garden books and a famous Iris breeder, but, above all, he was an understanding mentor for aspiring horticulturists.  At their Woodmont Avenue home in Berkeley, Dr. Mitchell and his wife, Rose created an informal atmosphere in which sophisticated gardening was a matter of course.  He could gently place the yoke of logic over a disorganized young gardener’s thinking without generating discouragement.  Again Victor was being faced with the need for reappraisal.  Just as he had been inspired by the rare plant cult of Eric Walther, Lewis Allen and James West, he became equally fired by the plant quality and plant adaptability cult of Dr. Mitchell. No longer would “the plant be the thing” but, hereafter, “the best suitable plant would be the thing.”

Mediterranean plants were Dr. Mitchell’s major interests after the Big Freeze and Victor, having lost so much in 1932, was equally enthusiastic about the climatically suitable plants of Southern Europe.  La Rochette featured species of Cistus, Helianthemum, Halimium, lavenders, and the multicolored Mitchell hybrid brooms.  This was Victor’s Mediterranean period, when he introduced, among others, Helleborus corsicus Putoria calabrica, Aphyllanthes monspeliensis and the hybrid broom ‘Geoffrey Skipwith,’ which Eric later featured so successfully at the Strybing Arboretum.

Concurrently, La Rochette became very active in breeding fuchsias.  The newly formed American Fuchsia Society, with Dr. E. O. Essig, Alice Eastwood Dr. Mitchell, Mrs. W. H. Ware and later, Gustave Neiderhollzer, had revived grandmothers’ vogue for fuchsias.  This genus was so obviously suited to the coastal areas of California and had been so neglected that its potential was obvious.  La Rochette acquired a large collection and imported new European fuchsias but, with the concept of “plant quality” inspired by Dr. Mitchell, the nursery became exceedingly select in its offerings.  This was followed by years of fuchsia breeding in an attempt to improve the size, quality and color range of garden fuchsias.  Readers of the Journal will remember Victor’s article on the history of fuchsia breeding[4], as well as notes on fuchsia culture[5]

Victor Reiter, Sr. was very active in the early fuchsia breeding work, an ideal father and son enterprise.  Victor, Sr. would do the hybridizing and Victor Jr. would grow the seedlings to maturity – thousands of them . The story of the quest for the all-double-white fuchsia has already been recorded in the Journal.[6]

The Reiters amassed a huge collection of species of Fuchsia in the hope of improving the garden varieties by introducing new characters into the garden strains.  This proved disappointing but they did introduce one fine hybrid, ‘Fanfare.’  In later years, Victor, Jr. also introduced ‘Mantilla,’ a trailing Fuchsia triphylla X F. ‘San Francisco’ hybrid.  Victor continued the fuchsia work after his father’s passing, making annual offerings of new introductions which were critically praised or criticized by an enthusiastic fuchsia public. 

In the midst of all this activity, the second great tragedy struck – World War II.  Victor, Jr., like his friend William E. Schmidt [7], went into war work.  Although over age, he felt it difficult not to take part in the effort.  He wound up in charge of woodworking in the development laboratory at Hendy Iron Works, in Sunnyvale.  Toward the end of the war, he had reached a crossroads – to decide whether to follow his esteemed superior, A. M. Poniatoff, into the budding Ampex Corporation or to return to La Rochette. 

Return he did, with enthusiasm.  During these post-war years the nursery renewed its breeding work, and continued to increase its rock-garden and succulent collections until the sales catalog of non-succulent ground covers and rock plants swelled to over five hundred kinds of plants.  In addition, there were dwarf conifers and several hundred succulents, shrubs, vines and the extensive fuchsia operation. 

Practically all saleable nursery stock was grown on the premises, much of it unobtainable from other sources.  This gained a reputation for La Rochette as a nurseryman’s nursery, a supplier of novelties.  There was a constant flow of visiting professionals who were eager to acquire and to share their rarities and experiences with tiny La Rochette.

It was an established custom never to charge botanists, plant breeders institutions, colleges or parks for new or rare plants.  In the case of Eric Walther and the Strybing Arboretum, plants were not only given to the Park but they were supplied for exchanges between Strybing and other institutions.

Out of town visitors to the Arboretum could purchase some of the rare items seen there, from La Rochette.  This brought many world contacts to the nursery.  Sales of this sort were seldom consummated, usually ending, rather in an outright gift or exchange arrangement.

About one-third of the nursery was devoted to display collections, testing and breeding projects, all of which were time-consuming.  To this was added the constant flow of horticultural personalities with whom Victor was delighted to share his time. Plant information was supplied to newspapers, magazines, horticultural writers and home gardeners, all of whom seemed to phone at any hour of the day or night, or on holidays of any denomination.

The combination of a research operation, a collector’s enthusiasm and the hard realities that business imposed was something practically impossible to accomplish then and totally impossible to achieve today.  Only with the drive of youth and the fanatical dedication of the entire La Rochette entourage was the tiny enterprise barely able to survive.  Profits had never, at best, been more than miniscule and the mounting costs of doing business, coupled with the declining public interest in high-maintenance gardens, made its final demise inevitable.  The aging owner found himself following the same road that Charles Abraham had followed in an earlier generation.  Charlie had seen his Western Nursery crumble with the changing times and Victor was also seeing his La Rochette becoming a similar anachronism.

Arthur Menzies had left the nursery and returned to the Park and the Strybing Arboretum.  Victor’s devoted helper, Frank Sacaze, could no longer carry on.  Eric Walther had retired from the Park but he still visited the nursery every Saturday morning to see his precious echeverias which Victor maintained in one of the greenhouses.  Realizing that his hours were numbered, Eric was frantically working to complete a monograph of Echeveria which, unfortunately, was still incomplete when the end came, in 1959.  The California Academy of Sciences is now editing his monograph.

La Rochette had seen its days of glory – the gate was closed and the blackberries slowly reclaimed the Sutro Forest acre for its own.

_____________________

Victor Reiter, Jr. continues to garden in a more restricted way but the acquisitive zeal of the plant lover and the hybridizer’s enthusiasm survives.  The now Honorary President still finds in the California Horticultural Society a bridge to the younger generation and the future  He sees great promise for the rising generation of institutional horticulturists, who, he hopes, will be protected from the whimsical fluctuations and demands of the marketplace by the substitution of long range government support.

[1] All footnote references are to articles in the California Horticultural Society Journal.  Notes on Plant-Growth Substances (Reiter) Vol. I:  71

[2] Echeveria Hybrids (Walther) Vol. XX:  60

[3] The First Thirty-One Years (Reiter)  Vol. XXV:  90

[4] Notes on the History of Fuchsia Breeding (Reiter) Vol. V:  144; Vol. VI:  182

[5] The Outdoor Culture of Fuchsia in Coastal California (Reiter) Vol. II: 1

[6] Notes on the History of Fuchsia Breeding III (Reiter) Vol. XXVIII:  161

[7] Annual Award:  William E. Schmidt (Reiter) Vol. XXVIII:  161

Bayview #covidtreetour (6-28-20)

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This week’s tour is in the Bayview District, centering on the Quesada Gardens, a neighborhood volunteer project that filled a median with an array of trees, shrubs, flowers, and edible plants. The tour begins at The African Outlet store on the corner of 3rd Street and Quesada Avenue and ends at Revere and 3rd streets, one block to the south. Our trio is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

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The walk heads west(ish) on Quesada Avenue to Newhall Street, then south(ish) on Newhall almost to Bayview Street, then returns to Revere Street, and heads east(ish) on Revere to 3rd Street, one block south of the tour’s beginning.

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 32. White arrows on the pavement provide directions whenever a turn is needed.

Note: Some of us plant geeks have difficulty with simple arithmetic, so you may notice that occasional numbers have been repeated and others left out. We’re working on it.

3rd Street at Quesada, NW corner

1. 4942 - 3rd    London plane tree (Platanus x acerifolia), hybrid of E USA species and European               species (one of the finest specimens of this tree in SF, where it often does not look this good)

Rubber trees (Ficus elastica ‘Decora’), S & SE Asia (the several large leafed plants in the plantings in the well-planted shade garden under the canopy of the plane tree

Quesada Avenue, 3rd to Newhall, north side

Cook pine (Araucaria columnaris) in the Quesada median

Cook pine (Araucaria columnaris) in the Quesada median

2. 4942 - 3rd    Chinese elm (Ulmus parvifolia), E Asia (in the median on Quesada, opposite the rear of The African Outlet)

3. 4942 - 3rd    Cook pine (Araucaria columnaris), New Caledonia (in the median on Quesada, opposite the rear of The African Outlet)

4. 1716 Quesada         Boxleaf azara (Azara microphylla), Chile

5. 1720 Quesada         Crabapple (Malus cultivar), Japan

6. 1730 Quesada         Purple-leaf plum (Prunus cerasifera), Eurasia (formerly SF’s most planted tree)

7. 1730 Quesada         Golden locust (Robinia pseudoacacia ‘Frisia’), E USA

several Canary Island date palms (Phoenix canariensis) in the Quesada median

several Canary Island date palms (Phoenix canariensis) in the Quesada median

8. 1730 Quesada         Yucca (Yucca gigantea), variegated cultivar, Mexico to C America (planted 26 years ago)

9. 1732 Quesada         Flowering cherry (Prunus serrulata), Japan

10. 1732 Quesada       Fig tree (Ficus carica), Mediterranean Basin (in the median; deeply lobed leaves; edible fruits!)

11. 1742 Quesada       Weeping bottlebrush (Callistemon viminalis), E Australia

12. 1748 Quesada       River she-oak (Casuarina cunninghamiana), Australia

13. 1752 Quesada       Southern magnolia (Magnolia grandiflora), SE USA (2 trees)

14. 1760 Quesada       Canary Island date palm (Phoenix canariensis), Canary Islands (numerous                                                  trees in the median along the full length of the Quesada Gardens)

jacaranda (jacaranda mimosifolia) closeup of flowers

jacaranda (jacaranda mimosifolia) closeup of flowers

15. 1762 Quesada       Blackwood acacia (Acacia melanoxylon), SE Australia

16. 1778 Quesada       English hawthorn (Crataegus laevigata), Europe

17. 1786 Quesada       Jacaranda (Jacaranda mimosifolia), Argentina, Bolivia

**Note the hand-painted tiled steps and beautiful murals at the top end of Quesada Avenue. The mural on the right honors the late Karl Paige, who worked with Annette Smith to initiate the neighborhood project that resulted in the median’s Quesada Gardens.

Newhall Street, Quesada to Revere, east side

17. 1600 block of Newhall      Primrose tree (Lagunaria patersonii), Australia & S Pacific Islands                (across the street, running the full block alongside the Bridgeview  Teaching & Learning Garden, a project of the Quesada Gardens Initiative)

18. 1645 Newhall                    Lemon bottlebrush (Callistemon citrinus), E Australia

Karl Paige, the founder of the Quesada Garden

Karl Paige, the founder of the Quesada Garden

Tree #19 is at the far end of the next block of Newhall. After viewing it return to Revere and head downhill.

Newhall Street, Revere to Bayview, east side

19. 1751 Newhall        Japanese pagoda tree (Styphnolobium japonicum, syn. Sophora japonica),       China (the biggest specimen in SF)

Revere Street, Newhall to 3rd, south side

20. 1799 Revere          Windmill palm (Trachycarpus fortunei), China (two trees with hairy trunks)

King palm (Archontophoenix cunninghamii), E Australia (a cluster of 5 clean trunks)

21. 1791 Revere          Port Orford cedar (Chamaecyparis lawsoniana), SW Oregon & NW                           California

22. 1783 Revere          Islay (Prunus ilicifolius), SF native tree!

23. 1780 Revere          Snow-in-summer tree (Melaleuca linariifolia), E Australia (tree is across the street)

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24. 1765 Revere          Japanese cryptomeria (Cryptomeria japonica), Japan (known as “sugi” in Japan)

26. 1733 Revere          Silver linden (Tilia tomentosa), SE Europe to Turkey

27. 1729 Revere          Douglas-fir (Pseudotsuga menziesii), West Coast & Rocky Mountains to S Mexico (needle leaves, a CA native tree!)

China doll tree (Radermachera sinica), China & Taiwan (tree with much - divided leaves, growing up through the Douglas-fir)

28. 1721 Revere          Italian bay tree (Laurus nobilis), Mediterranean Basin

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29. 1717 Revere          Northern California walnut (Juglans hindsii), Northern California valleys. Most edible walnuts grown in CA were grafted onto the roots of this  native species)

Please cross the street carefully.

30. 1716 Revere          Mimosa tree (Albizia julibrissin), Iran

31. 1714 Revere          Golden rain tree (Koelreuteria paniculata), China & Korea

32. Revere                   Brisbane box (Lophostemon confertus), E Australia

Ginkgo (Ginkgo biloba), China

This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.

Lower Haight #covidtreetour (6-20-20)

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This week’s tour is in the Lower Haight, a tree- and bike-filled neighborhood between Duboce Park and Page Street (recently designated a “slow street” for pedestrians), and between Scott and Fillmore streets. The tour begins on Steiner Street near Germania Street and ends at Steiner and Haight streets, two blocks to the north. Our group is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

The walk heads north on Steiner Street to Germania Street, then east on Germania to Fillmore Street, north on Fillmore to Waller Street, west on Waller to Potomac Street, south to Duboce Park and then back to Waller, then continues west on Waller to Scott Street, north on Scott to Page Street, east on Page to Steiner, and then south to its conclusion on Steiner at Waller Street, two short blocks from the beginning of the tour.   

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 43. White arrows on the pavement provide directions whenever a turn is needed.

Steiner Street, between Hermann and Germania, east side

Wow - a white poplar (Populus alba) on Steiner Street - it’s the City’s biggest by far!

Wow - a white poplar (Populus alba) on Steiner Street - it’s the City’s biggest by far!

1. 110-A Steiner          London plane tree (Platanus x acerifolia), hybrid of E USA species and European species (this commonly planted urban tree is prone to fungal diseases in SF’s cool foggy climate, as evidenced by the disfigured leaves and shoot tips on this tree)

2. 110 Steiner               White poplar (Populus alba), Morocco to Eurasia (SF’s biggest specimen, by far)

3. 114 Steiner               Cabbage tree or tī koūka in Māori (Cordyline australis), New Zealand

Turn right on Germania. Germania Street, Steiner to Fillmore, south side

4. 175 Germania          Sweet michelia (Magnolia doltsopa), Himalayas (fragrant flowers appear in winter)

5. 173 Germania          Sweetshade (Hymenosporum flavum), E Australia

6. 111 Germania          New Zealand Christmas tree, pōhutukawa (Metrosideros excelsa), New                                                     Zealand

7. 109 Germania          Carob (Ceratonia siliqua), E Mediterranean Basin (seed pods can be used to make a chocolate substitute—though not recommended for true chocolate lovers)

Turn left on Fillmore. Fillmore Street, Germania to Waller, west side

8. 145 Fillmore             Victorian box (Pittosporum undulatum) E Australia

Cross Waller Street; turn left. Waller Street, Fillmore to Steiner, north side

coast coral tree (Erythrina caffra) - another City Champion; biggest of this species in San Francisco by far!

coast coral tree (Erythrina caffra) - another City Champion; biggest of this species in San Francisco by far!

9. 422 Waller               Coast coral tree (Erythrina caffra), E South Africa (SF’s biggest; flowers in late winter)

10. 450 Waller             Mayten (Maytenus boaria), Chile (they’re everywhere around this ‘hood)

11. 498 Waller             Eureka lemon (Citrus x limon), hybrid from E Asia

Cross Waller Street to the south, turn right on Steiner Street to the west, and turn left on Potomac Street

Potomac Street, Waller to Duboce Park, east side

12. 541 Waller             Japanese plum (Prunus salicina), China (tree is on Potomac)

12 ½. 541 Waller        Callery pear (Pyrus calleryana), China (this species seldom does well in SF)

We ran into my friend Ken Wingard in front of his jacaranda (Jacaranda mimosifolia). Your tree is looking great, Ken!

We ran into my friend Ken Wingard in front of his jacaranda (Jacaranda mimosifolia). Your tree is looking great, Ken!

13. 70 Potomac            Jacaranda (Jacaranda mimosifolia), Argentina, Bolivia. This tree normally does well in SF’s warmer eastern neighborhoods - this homeowner is doing a great job keeping this tree healthy!

 14. 70 Potomac            Red delicious apple (Malus domestica cultivar), C Asia. Red delicious apples are snubbed by apple connoisseurs, but this homeowner likes the pretty red color against his dark grey home :)

15. 68 Potomac            Bronze loquat (Raphiolepis deflexa, syn. Eriobotrya deflexa), E Asia

16. 60 Potomac            Southern magnolia (Magnolia grandiflora), SE USA

17. 54 Potomac            Silver dollar gum (Eucalyptus polyanthemos), SE Australia (a youthful specimen showing the juvenile foliage that resembles a silver dollar)

tulip tree (Liriodendron tulipifera) in Duboce Park

tulip tree (Liriodendron tulipifera) in Duboce Park

**Step into Duboce Park and note the beautiful grove of gray-leaved olives (Olea europaea) to the left (east) and the sturdy tulip tree (Liriodendron tulipifera) to the right (west). Then backtrack on Potomac on the west side of the street.

Potomac Street, Duboce Park to Waller, west side

18. 49 Potomac            Sweet michelia hybrid (Magnolia doltsopa x Magnolia figo), hybrid of Asian species

19. 63 Potomac            Marina strawberry tree (Arbutus ‘Marina’), hybrid of Mediterranean species, first discovered in San Francisco

20. 67 Potomac            Japanese crabapple (Malus floribunda), Japan (flowers heavily in early April)

21. 75 Potomac            Purple-leaf plum (Prunus cerasifera), Eurasia. Formerly San Francisco’s most commonly planted treee, it’s become less popular of late - the trees are glorious for two weeks in February when it blooms, but by June they’re often losing leaves and they often look ratty by early August.

Turn left on Waller. Waller Street, Potomac to Pierce, south side

Dragon tree (Dracaena draco)

Dragon tree (Dracaena draco)

22. 591 Waller             Washington thorn (Crataegus phaenopyrum) Eastern USA

**Note the beautifully planted and maintained succulent garden along both Waller and Pierce streets.

At Pierce, Street, cross Waller to get to the north side of the street. Waller Street, Pierce to Scott, north side

23. 648 Waller             Cajeput tree (Melaleuca quinquenervia), Eastern Australia (one of the largest in San Francisco)      

24. 660 Waller             Primrose tree (Lagunaria patersonii), Australia & S Pacific Islands

25. 660 Waller             Dragon tree (Dracaena draco), Canary Islands (it’s one of the largest in San Francisco)

26. 667 Waller             Canary Island date palm (Phoenix canariensis), Canary Islands (across the                                                      street)

evergreen pear (Pyrus kawakamii)

evergreen pear (Pyrus kawakamii)

Scott Street, Waller to Haight, west side

27. 101 Scott    Evergreen pear (Pyrus kawakamii), Taiwan

28. 127 Scott    Brisbane box (Lophostemon confertus), E Australia

29. 127 Scott    Waggie palm (Trachycarpus fortunei ‘Wagnerianus’), China

Scott Street, Haight to Page, east side

30. 220 Scott    Peppermint willow (Agonis flexuosa), SW Australia

31. 240 Scott    Ficus (Ficus microcarpa ‘Nitida’), S Asia (a common street tree in this ‘hood)

two Chinese hackberries (Celtis sinensis) on Page Street

two Chinese hackberries (Celtis sinensis) on Page Street

Page Street, Scott to Pierce, north side

32. 850-856 Page          Chinese hackberry (Celtis sinensis), Asia (2 beautifully maintained trees; in the same plant family with cannabis!)

33. 838 Page                Brazilian pepper tree (Schinus terebinthifolius), Brazil

34. 834 Page                Red-leaf Japanese maple (Acer japonicum cultivar), Korea and Japan

35. 802 Page                Saratoga laurel (Laurus azorica), Azores and Canary Islands (selected form introduced by Saratoga Horticultural Foundation)

Page Street, Pierce to Steiner, south side

36. 785 Page                Senegal date palm (Phoenix reclinata), W Africa to E and S Africa

37. 700 block of Page   Brisbane box (Lophostemon confertus), E Australia (row of several trees across the street)

NE corner of Page and Steiner streets

38. 698 Page                Peruvian pepper tree (Schinus molle), Peru, Chile (across the street)

Steiner Street, Page to Haight, east side

39. 332 Steiner             Weeping bottlebrush (Callistemon viminalis), E Australia

40. 305 Steiner             Kapuka (Griselinia littoralis), New Zealand (tree is across the street)

sweetshade (Hymenosporum flavum)

sweetshade (Hymenosporum flavum)

Haight Street, east of Steiner

41. 797 Haight             Sweetshade (Hymenosporum flavum), E Australia (in full bloom now;                                                             several in this block, on both sides of the street)

Steiner Street, Haight to Waller, east side

42. 214 Steiner             Washington thorn (Crataegus phaenopyrum) E USA

Laussat Street, east of Steiner, both sides

43. Full block               Ficus (Ficus microcarpa ‘Nitida’), S Asia

This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.

Inner Sunset #covidtreetour (6-13-20)

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This week’s tour is of the Inner Sunset, a neighborhood with many successful trees that have adapted to sandy soils, wind, and summer fog. The tour begins with a couple of New Zealand trees in front of um.ma, the Korean restaurant on 9th near Lincoln Way. (Tartine is next door.) Our group is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

The walk heads south on 9th Avenue to Irving Street, then west to 10th Avenue, north on 10th to Lincoln Way, west on Lincoln to 11th Avenue, south on 11th to Kirkham Street, east on Kirkham almost to 7th Avenue, then north on 8th Avenue to Lincoln Way, and west on Lincoln to 9th Avenue, ending in front of Pacific Catch at the corner of Lincoln and 9th, just a few doors north of the beginning of the tour. 

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 59. White arrows on the pavement provide directions whenever a turn is needed.

A karaka (Corynocarpus laevigatus) from New Zealand on 9th Avenue - the only one we know of in San Francisco!

A karaka (Corynocarpus laevigatus) from New Zealand on 9th Avenue - the only one we know of in San Francisco!

9th Avenue, Lincoln to Irving, east side

1. 1220 - 9th     Karaka (Corynocarpus laevigatus), New Zealand

2. 1220 - 9th     Kermadec pōhutukawa (Metrosideros kermadecensis), Raoul Island, New Zealand

3. 1248 - 9th     Glossy privet (Ligustrum lucidum), S China

4. 1262 - 9th     Kwanzan flowering cherry (Prunus serrulata ‘Kwanzan’), E Asia (2 trees)

5. 1266 - 9th     Italian buckthorn (Rhamnus alaternus), Mediterranean Basin (3 trees)

Irving Street, 9th to 10th avenues, north side

6.  834 Irving   Coppertone Indian hawthorne (Raphiolepis ‘Coppertone’), hybrid of E Asian species (new spring growth is coppery in color)

7. 836 Irving    Ficus (Ficus microcarpa ‘Nitida’), S Asia (common street tree in SF)

10th Avenue, Irving to Lincoln Way, west side

Fern-leaf Catalina ironwood (Lyonothamnus floribundus ssp. asplenifolius)

Fern-leaf Catalina ironwood (Lyonothamnus floribundus ssp. asplenifolius)

8. 1275 - 10th   Purple-leaf plum (Prunus cerasifera), Eurasia (note the green-leafed sprouts from the root stock)

9. 1245 - 10th   Fern-leaf Catalina ironwood (Lyonothamnus floribundus ssp. asplenifolius), CA’s Channel Islands, except Catalina; CA native (a particularly fine specimen)

10. 1219 - 10th             Water gum (Tristaniopsis laurina), E Australia (grows in streamside locations in the wild; hence, the common name)

11. 1215 - 10th             Red-flowering gum (Corymbia ficifolia), SW Australia (one of SF’s iconic trees, yet occurs in a tiny area in the wild)

12. 1205 - 10th             Silver dollar gum (Eucalyptus polyanthemos), SE Australia; the juvenile foliage looks like a silver dollar.

Turn left, and head west on the south side of Lincoln Way.

Ginko (Ginkgo biloba) leaves

Ginko (Ginkgo biloba) leaves

Within Golden Gate Park on the north side of Lincoln Way, 10th to 11th avenues

13. 909 Lincoln            Saramati palm (Trachycarpus ukhrulensis), Himalayas; very rare in cultivation (across the street, inside SF Botanical Garden)

14. Lincoln at 11th      Monterey cypress (Hesperocyparis macrocarpa), Carmel, CA native (seen on the north side of Lincoln, all the way to the beach; one of the trees that helped turn the shifting sand dunes into the Golden Gate Park of today)

11th Avenue, Lincoln to Irving, west side

15. 1227 - 11th             Ginkgo (Ginkgo biloba), China

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16. 1245 - 11th             Mayten (Maytenus boaria), Chile

Cross 11th to the east side.

17. 1288 - 11th             Monkey-hand tree (Chiranthodendron pentadactylon), S Mexico and Guatemala (tree is near the corner of Irving Street; note the curious flowers, which look like a monkey’s outstretched hand)

11th Avenue, Irving to Judah, east side

18. 1300 - 11th             Primrose tree (Lagunaria patersonii), Australia & S Pacific Islands

19. 1319 - 11th             Prickly paperbark (Melaleuca styphelioides), E Australia (across the street)

20. 1324 - 11th             Bronze loquat (Raphiolepis deflexa, syn. Eriobotrya deflexa), E Asia

 11th Avenue, Judah to Kirkham, west side

21. 1403 - 11th             Trident maple (Acer buergerianum), E Asia

**This is a long block with numerous repeats of trees already seen on this walk.

22. 1495 - 11th             Hercules tree aloe (Aloidendron, syn. Aloe, x ‘Hercules’), hybrid of S African species (tree is in the planter, around the corner on Kirkham)

Kirkham Street, 11th to 10th, north side

Australian tree fern (Cyathea cooperi)

Australian tree fern (Cyathea cooperi)

23. 628 Kirkham          Blackwood acacia (Acacia melanoxylon), SE Australia (also across the    street)

24. 614 Kirkham          Victorian box (Pittosporum undulatum) E Australia

**Note the beautifully planted succulent garden at 608 Kirkham.

25. 600 Kirkham          Olive (Olea europaea), Mediterranean Basin (2 trees are on 10th)

Cross Kirkham to the south side and continue east.

Kirkham Street, 9th to 8th, south side

26. 433 Kirkham          Australian tree fern (Cyathea cooperi), NE Australia

27. 415 Kirkham          Peppermint willow (Agonis flexuosa), SW Australia

Kirkham Street, 8th to 7th, north side

You find random things on tree tours - someone was a pretty good Peanuts artist on this tree!

You find random things on tree tours - someone was a pretty good Peanuts artist on this tree!

28. 350 Kirkham          Cabbage tree (Cordyline ‘Atropurpurea’), hybrid of New Zealand species (the spiky plants with sword-shaped leaves)

IItalian cypress (Cupressus sempervivens ‘Glauca’), E Mediterranean    (the candle-shaped conifer)

29. 326 Kirkham          Sweet michelia (Magnolia doltsopa), Himalayas

Return to 8th and head north.

8th Avenue, Kirkham to Judah, east side

30. 350 Kirkham          Lemon bottlebrush (Callistemon citrinus), E Australia (3 trees are on 8th)

Monterey pine (Pinus radiata), Año Nuevo, Monterey, Cambria, CA native; most widely planted coniferous tree in the world, mostly for lumber (trees are across the street in the rear garden)

31. 1478 - 8th               Little-leaf linden (Tilia cordata), Eurasia

32. 1452 - 8th               Jade tree (Crassula ovata), S Africa (“tree” might be a bit of a stretch)

33. 1446 - 8th               Southern magnolia (Magnolia grandiflora), SE USA

34. 1426 - 8th               Evergreen pear (Pyrus kawakamii), Taiwan and China

8th Avenue, Judah to Irving, east side

35. 1390 - 8th               New Zealand Christmas tree, pōhutukawa (Metrosideros excelsa), New Zealand

spotted gum (Corymbia maculata),

spotted gum (Corymbia maculata),

36. 1362 - 8th               Spotted gum (Corymbia maculata), E Australia (an undeservedly rare tree, well adapted to the western half of SF)

37. 1331 - 8th               Sweetshade (Hymenosporum flavum), E Australia (across the street)

38. 1330 - 8th               Strawberry tree (Arbutus unedo) SW Europe to Ireland

8th Avenue, Irving to Lincoln Way, east side

38. 700 Irving              Red ironbark (Eucalyptus sideroxylon), E & SE Australia (tree is on 8th, across the street)

39. 1282 - 8th               Mirror plant (Coprosma repens), New Zealand

40. 1274 - 8th               London plane tree (Platanus x acerifolia), hybrid of E USA species and European species

red-flowering gum (Corymbia ficifolia) flower and leaves

red-flowering gum (Corymbia ficifolia) flower and leaves

41. 1260 - 8th               Red-flowering gum (Corymbia ficifolia), SW Australia (a favorite in the neighborhood)

42. 1238 - 8th               Sydney golden wattle (Acacia longifolia), E Australia

43. 1232 - 8th               Ceanothus (Ceanothus sp.), a CA native, not commonly grown as a street tree in SF

44. 1222 - 8th               Washington thorn (Crataegus phaenopyrum) E USA

Lincoln Way at 9th Avenue, south side

45. 1200 - 9th               Ribbon gum (Eucalyptus viminalis), S & E Australia (tree is across the street in Golden Gate Park; its bark peels off in ribbons)

This walking tour was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.

Dogpatch #covidtreetour (6-6-20)

This week’s tour is in Dogpatch, a neighborhood undergoing substantial changes, with historic homes and tech offices side-by-side. A benign climate encourages an array of interesting trees. The tour begins on the NW corner of Pennsylvania and 22nd Street, near the 22nd Street CalTrain Station. Our group is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

The walk heads north on Pennsylvania Street to 20th Street, then east over the 20th Street bridge (for a short canopy walk) to Tennessee Street, north on Tennessee to 19th Street, west on 19th to Minnesota Street, north on Minnesota to 18th Street, west on 18th to Indiana Street, south on Indiana to 19th, east one block on 19th, then returns to Indiana, continues south on Indiana to 20th, and turns west on 20th. The final trees are on 20th between Indiana and the I-280 freeway overpass, about a block from the start of the tour. 

Believe it or not, San Francisco’s only sugar maple (Acer saccharum) at the corner of 22nd and Pennsylvania

Believe it or not, San Francisco’s only sugar maple (Acer saccharum) at the corner of 22nd and Pennsylvania

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 59. White arrows on the pavement provide directions whenever a turn is needed.

NW corner of Pennsylvania and 22nd streets,

1. 698 Pennsylvania    Sugar maple (Acer saccharum), Great Lakes to Canada to Tennessee; appears on the Canadian flag; not well adapted to San Francisco’s climate, as evidenced by this tree’s general lack of vigor. This is the only sugar maple known to exist in San Francisco!

2. 1200 - 22nd              Freeman maple (Acer x freemanii), hybrid of Acer rubrum & Acer accharinum, both from E North America (all of the maples surrounding this building are freeman maples (other than the sugar maple at the corner)

Pennsylvania Street, 22nd to 20th, east side

3. 699 Pennsylvania    Sweetgum (Liquidambar styraciflua), E USA to Mexico & C America (several trees are on 22nd)

California buckeye (Aesculus californica) at the Caltrain station off of 22nd Street.

California buckeye (Aesculus californica) at the Caltrain station off of 22nd Street.

We didn’t “chalk” this, but you can see one of San Francisco’s “landmark trees” if you cross 22nd Street at this point, and walk down the stairs to the Caltrain stop. When you reach the bottom of the stairs, continue walking forward (away from 22nd Street) until you see a very large tree on the hillside on your right. The tree is a California buckeye (Aesculus californica), a tree that is native to San Francisco. This massive tree has been given landmark status by the City of San Francisco.

4. 681 Pennsylvania    Red maple (Acer rubrum), Florida to Canada to Mississippi River

5. 603 Pennsylvania    New Zealand Christmas tree, pōhutukawa (Metrosideros excelsa), New Zealand

Oleander - beautiful, but poisonous (!)

Oleander - beautiful, but poisonous (!)

    602 Pennsylvania    Primrose tree (Lagunaria patersonii), Australia & S Pacific Islands (across the street)

6. 587 Pennsylvania    Australian willow (Geijera parviflora), E & SE Australia

7. 581 Pennsylvania    Brazilian pepper tree (Schinus terebinthifolius), Brazil

8. 535 Pennsylvania    Oleander (Nerium oleander), Mediterranean Basin to S China

Pennsylvania Street, north of 20th, east side

9. 491 Pennsylvania    Jujube (Ziziphus jujube), S Asia to China; only one in San Francisco; fruits are edible and tasty

red ironbark (Eucalyptus sideroxylon) - one of San Francisco’s best of this species at 461-73 Pennsylvania

red ironbark (Eucalyptus sideroxylon) - one of San Francisco’s best of this species at 461-73 Pennsylvania

10. 461-473 Pennsylvania        Red ironbark (Eucalyptus sideroxylon), E & SE Australia

11. 460 Pennsylvania               Giant bird-of-paradise (Strelitzia nicolai), S Africa (across the street; banana-like foliage above the street address)

Return to and cross 20th Street, then turn left toward the Bay to cross the 20th Street bridge over I-280, Indiana, and Minnesota

Here we begin a “canopy walk” with chalked labels written on the bridge’s cylindrical handrail.

20th Street Bridge, Pennsylvania to Tennessee, south side

12. Over I-280, east side          Silver dollar gum (Eucalyptus polyanthemos), SE Australia; the juvenile foliage on young trees looks like a silver dollar

13. Over Indiana, east side     Dawn redwood (Metasequoia glyptostroboides), China; note the differences in character of these trees just south of the bridge with their relatives, the California coast redwoods further down the block

We had to get creative on this stretch of 20th Street…

We had to get creative on this stretch of 20th Street…

14. Over Minnesota, west side            Chinese elm (Ulmus parvifolia), E Asia

15. Over Minnesota, east side             London plane tree (Platanus x acerifolia), hybrid of E USA species and European species; this commonly planted         urban tree is prone to fungal diseases in SF’s cool foggy climate, as evidenced by the disfigured leaves and shoot tips on this tree

Back on terra firma…

Tennessee Street, 20th to 19th, west side

16. 888 Tennessee       Purple-leaf plum (Prunus cerasifera), Eurasia (formerly SF’s most planted street tree)

17. 800 Tennessee       Locust (Robinia x ambigua ‘Idahoensis’), hybrid of N American species

19th Street, Tennessee to Minnesota, south side

18. Entire block           Brisbane box (Lophostemon confertus), E Australia

Here, we begin a tour of UCSF’s “Medicinal/Botanical Garden,” created by the landscape firm of Delaney + Chin. The garden wraps around east, west, and south sides of 654 Minnesota, beginning here with Minnesota Street. After rounding the block in a counterclockwise direction, we return to the garden on Indiana and 22nd streets.

Minnesota Street, 19th to 18th, west side

19. 654 Minnesota       Japanese maple (Acer palmatum), Korea & Japan

19 ½. 654 Minnesota   Italian bay tree (Laurus nobilis), Mediterranean Basin; leaves used for seasoning

20. 654 Minnesota       Ginkgo (Ginkgo biloba), China; fruits of the female trees are foul-smelling but the seeds are considered a delicacy in China and Japan [delicious!: editor]

21. 660 Minnesota       Chinese elm (Ulmus parvifolia), E Asia

Turn left onto 18th Street and walk to Indiana Street

Indiana Street, 18th to 19th, east side

22. North half of block            Fern-leaf Catalina ironwood (Lyanothamnus floribundus ssp. asplenifolius), CA’s Channel Islands, except Catalina; CA native

23. (not used)

24. 654 Minnesota       Cabbage tree (Cussonia paniculata), S Africa

25. 654 Minnesota       Edible fig tree (Ficus carica), E Mediterranean Basin to C Asia; trained against the wall as an espalier

26. 680 Indiana            African sumac (Rhus lancea), S Africa (across the street)

27. 654 Minnesota       Guava (Psidium guajava), Mexico to C America and Caribbean

28. 654 Minnesota       Macadamia nut tree (Macadamia sp.), Australia

29. Indiana at end of 19th       Cottonwood or poplar (Populus sp.), N America (across the street)

19th Street, Indiana to Minnesota, north side

30. 654 Minnesota       Peach tree (Prunus persica), China

31. 654 Minnesota       Lime tree (Citrus x aurantifolia x Citrus limon), hybrid origin

32. 654 Minnesota       Loquat (Rhaphiolepis loquata, syn. Eriobotrya japonica), SE China; fruit is edible

                                    Pomegranate (Punica granatum), SW Asia

33. 654 Minnesota       Makrut lime (Citrus hystrix), SE Asia

34. 654 Minnesota       Calamondin/calamansi (xCitrofortunella microcarpa), hybrid of mandarin and kumquat

Return to Indiana Street and head south along the west side of Esprit Park.

Indiana Street, 19th to 20th, east side

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35. Esprit Park            Purple smoke tree (Cotinus coggygria ‘Royal Purple’), Eurasia; low tree with purple foliage, inside the park

36. Esprit Park            Coast redwood (Sequoia sempervirens), C & N CA coastal native, tallest tree species in the world (most of the coniferous trees along the west edge of the park)

37. Esprit Park            Pacific wax myrtle (Myrica californica), CA to British Columbia (two large shrubs along the sidewalk)

38. Esprit Park            Monterey pine (Pinus radiata), Año Nuevo, Monterey, Cambria, CA native, most widely planted coniferous tree in the world (mostly for  lumber)

Indiana Street, 20th to 22nd, east side

9. 801 Indiana            Dawn redwood (Metasequoia glyptostroboides), China, thought extinct but discovered in the 1940s (previously seen from the canopy walk on the 20th Street bridge overhead)

40. 867 Indiana            Victorian box (Pittosporum undulatum) E Australia (a few trees among a  grove of large coast redwoods)

41. 953 Indiana            London plane tree (Platanus x acerifoliia), hybrid of E USA species and European species

22nd Street, Indiana to I-280 overpass, north side

42. 998 Indiana            Ginkgo (Ginkgo biloba), China; note the slightly different character of the foliage on this selection of ginkgo (trees are on 22nd)

43. 998 Indiana            Red maple (Acer rubrum), Florida to Canada to Mississippi River (trees  are on 22nd)

This walking tour of was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.

San Francisco Magazine Story

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A reader recently let me know that the link to the May 2017 article in San Francisco Magazine was broken. That article, written by Lynn Rapoport, is my favorite of all of the articles that have been written about San Francisco’s urban forest. It’s beautifully written, and the article comes the closest to explaining why I (and I think many of you) love the trees of this City so much. So I’m restoring it to the site in hopes that 2020 readers will enjoy it as much as those from three years ago:

Higher Education

Why I’m trying to learn the name of every tree species in San Francisco.  By Lynn Rapoport

Sometime in the second half of 2016, I set out on a series of neighborhood walks with my friend Masha – like me, a fan of four-hour urban investigations, but, unlike me, possessed of a deep store of botanical knowledge.  On these walks I learned the name of the jacaranda, the tree, it turned out, whose lavender blossoms had floated down over the proceedings at my best friend’s wedding a decade earlier.  I saw my first Norfolk Island pine, outlandishly sculpted by evolution to resemble some crowing achievement of mid-century modern design.  I found out that running one’s hand along the trunk of a flaxleaf paperbark tree is indeed like petting a stack of handmade loose-leaf.  And I became acquainted with the ginkgo, contemporary of dinosaurs, the female seldom seen here owing to the puke-like tang of its fruit.

It felt strange to suddenly know these things, given that trees had previously presented as an agreeable peripheral blur while I wandered through the city that’s been my home for 23 years.  It wasn’t that I didn’t care about nature, but I’d always been a pretty vague, generalist appreciator, whether walking out to the end of Tomales Point in Marin or traversing the hillside gardens flanking the staircases above the Castro.  So it’s unclear why 2016 – an exciting time in all our lives – was the year I precipitously turned into someone who spends her weekends peering up at shaggy bark, catkins, and pinnately compound leaf arrangements, murmuring names like “shoestring acacia” and “mountain she-oak”.

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Some share of the credit – or blame – resides with a man named Mike Sullivan, to whom Masha and I had developed a somewhat cult follower-like attachment.  Onetime board president of Friends of the Urban Forest and keeper of the blog San Francisco Trees, Sullivan wrote the essential urban-forest guidebook The Trees of San Francisco, a compendium of walking tours and tree profiles that has taken us in search of European hornbeams in Potrero Hill, Port Orford cedars in the Panhandle, and Sydney golden wattles in Pacific Heights – where I also caught my first glimpse of the controversial Monterey cypress hedge enshrouding the Spreckels mansion, home to romance novelist Danielle Steel.

By the time we’d finished our debut tour and I’d seen my first gorgeous, willowy mayten and crushed between my fingers the deliciously fragrant leaves of my first California bay, I found it baffling that I could have been so unconcerned with the names, morphology and customs of an entire charismatic category of this planet’s living things.  I resolved to get on a first-name basis with as many San Francisco representatives – 124,795 street trees encompassing some 500 species, per a city census completed in January – as I could find. 

It sounds a bit compulsive, like some kind of taxonomic hoarding.  But I think there’s more to it than just a drive to collect facts.  When I met up with Sullivan in March, he pointed out that learning to identify San Francisco’s urban forest can also be an extension of the glorious perennial occupation of learning to know San Francisco itself.  We were walking through Parnassus Heights, where Sullivan, a startup and venture capital lawyer by trade, lives with his husband, their son, and a dog named Mather (after the city-owned family camp in Yosemite).  As we paused on Parnassus Avenue opposite a row of red flowering gums, one of the many antipodean species that love our foggy coastal climate, he talked about the “serendipitous” discoveries he’s made, arboreal and otherwise, walking around the city during his 33-year tenure here. 

And these tree walks do feel like an outgrowth of two-plus decades of urban explorations that have rewarded me with a more densely annotated map of this city I adore.  In the new year, waiting for the Bailey’s acacias to bloom, and then the Victorian boxes, and then the California buckeyes, it dawned on me that, contrary to conventional wisdom, San Francisco has seasons, erratic and overlapping though they may be.  Even the fallen leaves of a towering silk oak that pile up outside the doorway of the hipster barbershop down the block from my house have somehow come to texture my understanding of this place. 

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That richness has activated something, too, a renewed ability to be curious and dazzled in a city where I’ve lately been more focused on a distressing housing market, on anxieties about how much longer, as a renter, I’ll be able to hang on here.  Spending time staring up at the aerial root systems of New Zealand Christmas trees, or crumpling and smelling a bay laurel leaf like the ones I put in my stockpot, or learning to pick out the metallic sound of the Anna’s hummingbirds that frequent the bottlebrushes, I suppose I’m doubling down on my emotional stake in San Francisco, amid uncertainty, despite possible heartbreak ahead.  Maybe there’s something consoling about keeping company with the city’s most permanent residents.

As Sullivan pointed out, many of them, far from their native soil, reflect the contradictory emergence, over the years, of a treescape unique to San Francisco, one that self-selects for thriving amid sandy soils, harsh winds, fog, seven or eight months without rain, and of course, cement.  Noting that he could be dropped into a San Francisco stripped bare of any other identifying markers and know it by its trees, Sullivan said “We’ve almost created our own native urban forest here.”  It was a remark unlikely to thrill the local purists who dream of ridding the city of invasive plants – a ship that has long since sailed out of San Francisco Bay.  But I found the idea evocative, and after we’d said our goodbyes and I was walking home over the 17th Street hill, I realized that my map of the city, with its singular population of trees, had gained another new overlay.  Wandering through Parnassus Heights a few weeks later on our own, Masha and I passed the 20-foot tall soapbark tree that Sullivan and his husband had planted outside their house the week in 2004 that their son was born.  I was happy they’d been able to put down roots, and envious, too, because I hadn’t managed to do the same in this wondrous place with its inhospitable soil.  That ship, too, had probably sailed.  Or maybe it hadn’t.  We continued walking through the urban forest, searching for unknown points on a map, eyes turned upward toward the branches.




Castro #covidtreetour (5-31-20)

One of the city’s best coast live oaks (Quercus agrifolia) at 19th and Noe

One of the city’s best coast live oaks (Quercus agrifolia) at 19th and Noe

This week’s San Francisco #covidtreetour, where we chalk tree descriptions and -> directional arrows -> on sidewalks, to allow social-distancing walkers to safely explore the urban forest, was in the Castro/Eureka Valley neighborhood. Our group is the same: Jason Dewees (author of Designing with Palms), Richard Turner (retired editor of Pacific Horticulture), and I’m Mike Sullivan, author of Trees of San Francisco.

This tour is concentrated in the eastern end of Eureka Valley, between 18th and 19th streets, in the blocks east of Castro Street. It begins at the Noe Hill Market, 19th and Noe, with a magnificent coast live oak, one of San Francisco’s few native tree species.

The walk heads east on 19th Street to Sanchez Street, then north on Sanchez to Hancock Street, east on Hancock to Church Street, returns west on Hancock to Noe Street, jogs south on Noe and then returns north on Noe to 18th Street, east on 18th to Sanchez, then west on 18th to Hartford Street, south on Hartford to 19th Street, and east on 19th to the tour’s beginning at Noe Street.

Follow these tours on instagram: #covidtreetour

Follow these tours on instagram: #covidtreetour

Numbered trees are labeled with common and scientific names and country of origin, all written in white chalk on the sidewalk; accompanying numbers, in blue, run from 1 to 59. White arrows on the pavement provide directions whenever a turn is needed.

19th Street, SW corner of Noe

1. 4001 - 18th   Coast live oak (Quercus agrifolia), California native! And one of the few trees native to San Francisco (tree is on Noe)

19th Street, Noe to Sanchez, south side

2. 3995 - 19th   Deodar cedar (Cedrus deodara), Himalayas

3. 3995 - 19th   Mayten (Maytenus boaria), Chile

Mexican fan palm (Washingtonia robusta), with my  masked cohorts Richard Turner (left) and Jason Dewees (right).

Mexican fan palm (Washingtonia robusta), with my masked cohorts Richard Turner (left) and Jason Dewees (right).

4. 3975 - 19th   Mexican fan palm (Washingtonia robusta), Baja California, Mexico

5. 3959 - 19th   New Zealand Christmas tree, pōhutukawa (Metrosideros excelsa), New Zealand

6. 3956 - 19th   Western sycamore (Platanus racemosa), a California native, but rare on San Francisco streets (across the street)

7. 3957 - 19th   Primrose tree (Lagunaria patersonii), Australia & S Pacific Islands

8. 3943 - 19th   Yarwood plane tree or sycamore (Platanus ‘Yarwood’), originated at Sather Tower, UC Berkeley (these two trees are being pollarded; google the word to understand what that’s about)

9. 3931 - 19th   Monterey cypress (Hesperocyparis macrocarpa), Carmel, CA native (above wall on private propert.y). Turn left and head downhill on Sanchez

Sanchez Street, 19th to Hancock, west side

10. 590 Sanchez           Ginkgo (Ginkgo biloba), China

11. 580 Sanchez           Cajeput tree (Melaleuca quinquenervia), E Australia

12. 567 Sanchez           Canary Island date palm (Phoenix canariensis), Canary Islands (across the street)

13. 526 Sanchez           Wheel tree (Trochodendron aralioides), S Korea, Japan, Taiwan (the green plant at eye level between sidewalk and house). This is a very rare plant in San Francisco. Turn right on Hancock Street.

Hancock Street, Sanchez to Church, south side

14. 93 Hancock            Eastern dogwood (Cornus florida ) E North America (note the one branch with variegated foliage — a sport or mutation)

15. 93 Hancock            Victorian box (Pittosporum undulatum) E Australia (5 trees)

16. 93 Hancock            Hinoki cypress (Chamaecyparis obtusa), Japan

Pin oak (Quercus palustris) - this tree is identifiable by its deeply lobed leaves

Pin oak (Quercus palustris) - this tree is identifiable by its deeply lobed leaves

17. 77 Hancock            Purple-leaf plum (Prunus cerasifera), Eurasia (formerly SF’s most planted street tree)

18. 57 Hancock            Red-flowering gum (Corymbia ficifolia), SW Australia

19. 55 Hancock            Saucer magnolia (Magnolia x soulangeana), hybrid selection

20. 45 Hancock            Pin oak (Quercus palustris), Midwest USA

21. 31-33 Hancock       Queen palm (Syagrus romanzoffiana), Brazil (2 trees)

Please cross the street carefully here.

Hancock Street, Church to Sanchez, north side

22. 646 Church            Evergreen pear (Pyrus kawakamii), Taiwan (tree is on Hancock)

little leaf linden (Tilia cordata) in bloom, with one of the plant’s yellowish-green “bracts” showing to the right of the flowers

little leaf linden (Tilia cordata) in bloom, with one of the plant’s yellowish-green “bracts” showing to the right of the flowers

23. 646 Church            Little-leaf linden (Tilia cordata), Eurasia (tree is on Hancock)

24. 646 Church            Brazilian pepper tree (Schinus terebinthifolius), Brazil

25. 20 Hancock            Southern magnolia (Magnolia grandiflora), SE USA

26. 44 Hancock            California buckeye (Aesculus californica ), San Francisco native tree!

27. 545 Sanchez           Olive (Olea europaea), Mediterranean Basin (3 trees are on Hancock)

28. 545 Sanchez           Strawberry tree (Arbutus unedo) SW Europe to Ireland (tree is on Hancock)

Hancock Street, Sanchez to Noe, north side

29. 112 Hancock          Blackwood acacia (Acacia melanoxylon), SE Australia (3 trees)

30. 118 Hancock          Ficus (Ficus microcarpa ‘Nitida’), India to China

31. 122 Hancock          Brisbane box (Lophostemon confertus), E Australia (a fantastic specimen)

32. 132 Hancock          Coast live oak (Quercus agrifolia), a California native - and one of the few trees native to San Francisco

Please cross the street carefully here

Hancock Street, Sanchez to Noe, south side

coast banksia (Banksia integrifolia) showing its "flower spike", an inflorescence made up of several hundred flowers densely packed around a woody axis

coast banksia (Banksia integrifolia) showing its "flower spike", an inflorescence made up of several hundred flowers densely packed around a woody axis

33. 135 Hancock          Coast banksia (Banksia integrifolia), E Australia (above the wall, next to the garage

34. 135 Hancock          Marjory Channon pittosporum (Pittosporum tenuifolium ‘Marjory Channon’), New Zealand

35. 137 Hancock          Pygmy date palm (Phoenix roebelenii), S China, Laos, Vietnam

36. 183 Hancock          Shoestring acacia (Acacia stenophylla), W Australia (above the fence)

37. 183 Hancock          Zunca palm (Parajubaea sunkha), Bolivia (very rare in San Francisco - we need more of these!)

Turn uphill on Noe

Noe Street, south of Hancock, east side

38. 559 Noe     Pomegranate (Punica granatum), W & Central Asia (a particularly fine specimen)

Backtrack - turn downhill on Noe

Noe Street, Hancock to 18th, east side

39. 549 Noe     Cabbage tree or tī kōuka in Maori (Cordyline australis), New Zealand

                        Jacaranda (Jacaranda mimosifolia), Argentina, Bolivia

40. 526 Noe     Orange trees (Citrus sinensis), S Asia (across the street)

18th Street, Noe to Sanchez, south side

41. 3955 - 18th             Lemon bottlebrush (Callistemon citrinus), E Australia

42. 3933 - 18th             Brisbane box (Lophomyrtus confertus), E Australia

At Sanchez Street, cross 18th and backtrack on 18th - head back towards Noe on the north side of the street.

18th Street, Sanchez to Noe, north side

43. 3914 - 18th             Callery pear (Pyrus calleryana), China (2 trees)

44. 3938 - 18th             White champaca (Magnolia x alba), hybrid of SE Asian species (watch for                                                        the fragrant flowers)

45. 3946 - 18th             Sweet michelia (Magnolia doltsopa), Himalayas

18th Street, Noe to Hartford, north side

a Melaleuca species - but not sure which one.  This tree stumped all three of us!

a Melaleuca species - but not sure which one. This tree stumped all three of us!

46. 4000 - 18th             Paperbark tree (Melaleuca sp.), Australia (tree is on Noe)

47. 4002 - 18th             Loquat (Rhaphiolepis loquata, syn. Eriobotrya japonica), SE China (fruit is edible)

48. 4016 - 18th             Weeping bottlebrush (Callistemon viminalis), E Australia. Turn left and head uphill on Hartford.

Hartford Street, 18th to 19th, east side

49. 115 Hartford          Kwanzan flowering cherry (Prunus serrulata ‘Kwanzan’), E Asia (tree was                                                 grafted at chest height)

50. 147 Hartford          Bailey’s acacia (Acacia baileyana), E Australia (purple-leafed form)

     148 Hartford          Bailey’s acacia (Acacia baileyana), E Australia (green-leafed form, across the street)

51. 142 Hartford          Peppermint willow (Agonis flexuosa), SW Australia (across the street)

52. 157 Hartford          Gold medallion tree (Cassia leptophylla), Brazil

53. 167 Hartford          Plum tree (Prunus x domestica), cultivated hybrid

54. 171 Hartford          Kwanzan flowering cherry (Prunus serrulata ‘Kwanzan’), E Asia (front                                                       tree)

Angel’s trumpet (Brugmansia ‘Charles Grimaldi’)

Angel’s trumpet (Brugmansia ‘Charles Grimaldi’)

Avocado tree (Persea americana), Mexico & Central America (tall tree behind the cherr at this address)

Dragon tree (Dracaena draco), Canary Islands (spiky plant behind the cherry)

55. 173 Hartford          Angel’s trumpet (Brugmansia ‘Charles Grimaldi’), hybrid of South American species, named for the late San Francisco garden designer)

weeping bottlebrush (Callistemon viminalis)

weeping bottlebrush (Callistemon viminalis)

56. 187 Hartford          Weeping bottlebrush (Callistemon viminalis), E Australia (3 trees). Turn left at 19th Street.

19th Street, Hartford to Noe, north side

57. 193 Noe     Freeman maple (Acer x freemanii), hybrid of Acer rubrum & Acer saccharinum, both                                            from E North America (tree is on 19th)

58. 4025 - 19th             Victorian box (Pittosporum undulatum) E Australia (across the street; white                              flowers are strongly fragrant)

59. 4002 - 19th             Chinese elm (Ulmus parvifolia), E Asia

There are a couple more interesting trees that we didn’t include on the tour - if you walk uphill on Noe from 19th to the corner of Cumberland (on the left side as you ascend, you’ll see two very large trees in the sidewalk just past Cumberland. These are swamp mahoganies (Eucalyptus robusta) - a rare tree in San Francisco, and we think these are the largest specimens in the City.

This walking tour of was organized by Mike Sullivan, author of The Trees of San Francisco (if you like this tour, there are 12 more neighborhood tree tours in Mike’s book), Jason Dewees, horticulturist at Flora Grubb Gardens and author of Designing with Palms; and Richard Turner, retired editor of Pacific Horticulture magazine and editor of Trees of Golden Gate Park. If you’re a tree enthusiast, buy all three books! You can follow Mike (@sftreeguy) and Jason (@loulufan) on Instagram.