Aster Gensinger Blau
A compact, bushy, clump-forming, herbaceous perennial to 35cm, producing a neat mound of narrow, lance-shaped, mid-green foliage covered in masses of light blue-purple daisies in early to mid-autumn
Synonyms
Symphyotrichum dumosum 'Kiesapphire'PBRAster 'Kiestrbl'
see moreAster dumosus 'Kiesapphire'
Aster 'Kieblue'
Aster novi-belgii 'Sapphire'
Aster dumosus Sapphire
Aster Gensinger Blau
Aster Gensingen Blue
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Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Purple | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Asteraceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Genus
Symphyotrichum includes around 90 species of annuals, biennials and perennials, mostly spread through the Americas, that were formerly included within the genus Aster. Leaves are simple, lance-shaped and entire, but it is their daisy-like flowerheads that they are grown for; central disc florets are typically yellow, surrounded by strap-shaped ray florets in shades of pink, blue, purple or white
- Name status
Trade
How to grow
Cultivation
Grow in fertile, moisture-retentive soil, in full sun or partial shade; mulch every year after cutting down in late autumn. Divide every third year to retain vigour and flower quality. See aster cultivation
Propagation
Propagate by division in spring, replanting only vigorous young shoots
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Flower borders and beds
Pruning
Cut stems close to the ground in late autumn
Pests
May be susceptible to aphids, leaf and bud eelworms, slugs, snails and tarsonemid mite
Diseases
May be susceptible to Fusarium wilt, grey moulds and leaf spot. Generally resistant to powdery mildews
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