Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bulgaria,
Burundi,
Cambodia,
Cameroon,
Cape Verde,
Central European Rus,
Chad,
China South-Central,
China Southeast,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
Finland,
France,
Germany,
Great Britain,
Greece,
Gulf of Guinea Is.,
Gulf States,
Hungary,
India,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Kazakhstan,
Kenya,
Kirgizstan,
Krasnoyarsk,
Kriti,
Krym,
Laos,
Lebanon-Syria,
Libya,
Madeira,
Mongolia,
Morocco,
Myanmar,
Nepal,
Netherlands,
Niger,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Oman,
Pakistan,
Palestine,
Poland,
Portugal,
Romania,
Rwanda,
Sardegna,
Saudi Arabia,
Sicilia,
Sinai,
Somalia,
South European Russi,
Spain,
Sri Lanka,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Tanzania,
Thailand,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yemen,
Yugoslavia,
Zaïre
Introduced into:
Alabama,
Alaska,
Alberta,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Ascension,
Bermuda,
Bolivia,
Brazil Northeast,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Canary Is.,
Cape Provinces,
Chile Central,
Chile South,
Colombia,
Colorado,
Connecticut,
Cuba,
Delaware,
Desventurados Is.,
District of Columbia,
Dominican Republic,
Easter Is.,
Ecuador,
Florida,
Georgia,
Greenland,
Haiti,
Hawaii,
Idaho,
Illinois,
Indiana,
Iowa,
Jamaica,
Japan,
Juan Fernández Is.,
Kansas,
Kentucky,
Korea,
Louisiana,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Northeast,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Caledonia,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
Newfoundland,
Norfolk Is.,
North Carolina,
North Dakota,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Paraguay,
Pennsylvania,
Peru,
Primorye,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Réunion,
Saskatchewan,
South Australia,
South Carolina,
South Dakota,
St.Helena,
Tasmania,
Tennessee,
Texas,
Tristan da Cunha,
Uruguay,
Utah,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Western Australia,
Wisconsin,
Wyoming,
Yakutskiya