Native to:
Albania,
Algeria,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Canary Is.,
Central European Russia,
China South-Central,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Krasnoyarsk,
Kriti,
Krym,
Lebanon-Syria,
Libya,
Madeira,
Morocco,
Nepal,
Netherlands,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
Palestine,
Poland,
Portugal,
Romania,
Sardegna,
Sicilia,
South European Russia,
Spain,
Sweden,
Switzerland,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Ukraine,
West Himalaya,
West Siberia,
Yugoslavia
Introduced into:
Alabama,
Alberta,
Amur,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arkansas,
Ascension,
Bermuda,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
Burundi,
California,
Cape Provinces,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
China Southeast,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Delaware,
Easter Is.,
Ecuador,
Florida,
Free State,
Georgia,
Guatemala,
Gulf of Guinea Is.,
Hawaii,
Honduras,
Idaho,
Illinois,
India,
Jamaica,
Japan,
Jawa,
Juan Fernández Is.,
Kenya,
Kermadec Is.,
Korea,
KwaZulu-Natal,
Louisiana,
Madagascar,
Maine,
Malaya,
Marquesas,
Maryland,
Massachusetts,
Mauritius,
Mexico Central,
Mexico Gulf,
Mexico Southeast,
Mexico Southwest,
Michigan,
Mississippi,
Nansei-shoto,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
Norfolk Is.,
North Carolina,
Northern Provinces,
Nova Scotia,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Panamá,
Pennsylvania,
Peru,
Primorye,
Queensland,
Québec,
Rhode I.,
Réunion,
South Australia,
South Carolina,
Sri Lanka,
St.Helena,
Sulawesi,
Taiwan,
Tanzania,
Tasmania,
Tennessee,
Texas,
Tubuai Is.,
Uruguay,
Venezuela,
Vermont,
Victoria,
Virginia,
Washington,
Western Australia,
Wisconsin,
Zimbabwe