Native to:
Afghanistan,
Albania,
Austria,
Belgium,
Bulgaria,
China South-Central,
China Southeast,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
Egypt,
France,
Germany,
Greece,
Hungary,
Iran,
Italy,
Kriti,
Lebanon-Syria,
Nepal,
Netherlands,
North Caucasus,
Norway,
Pakistan,
Palestine,
Poland,
Romania,
Sardegna,
Sicilia,
Sinai,
Sweden,
Switzerland,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
West Himalaya,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Algeria,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Azores,
Baleares,
Bangladesh,
Bermuda,
Brazil South,
British Columbia,
California,
Canary Is.,
Cape Provinces,
Central European Russia,
Chad,
Colorado,
Connecticut,
Corse,
Delaware,
District of Columbia,
Dominican Republic,
Ethiopia,
Falkland Is.,
Florida,
Free State,
Gambia,
Georgia,
Great Britain,
Hawaii,
Idaho,
Illinois,
Indiana,
Iowa,
Ireland,
Irkutsk,
Japan,
Kansas,
Kentucky,
Krym,
Libya,
Louisiana,
Madeira,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mauritania,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Niger,
Norfolk Is.,
North Carolina,
Northwest European Russia,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
Society Is.,
South Carolina,
South Dakota,
South European Russia,
Spain,
Tasmania,
Tennessee,
Texas,
Tristan da Cunha,
Tunisia,
Utah,
Venezuela,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming