Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Amur,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
California,
Canary Is.,
Cape Provinces,
Cape Verde,
Central European Rus,
Chad,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
Djibouti,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
Finland,
France,
Germany,
Great Britain,
Greece,
Gulf States,
Hungary,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Kazakhstan,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuwait,
Lebanon-Syria,
Libya,
Madeira,
Manchuria,
Mauritania,
Mexican Pacific Is.,
Mexico Northwest,
Mongolia,
Morocco,
Myanmar,
Namibia,
Nepal,
Netherlands,
New South Wales,
Niger,
North Caucasus,
North European Russi,
Northern Territory,
Northwest European R,
Norway,
Oman,
Pakistan,
Palestine,
Poland,
Portugal,
Primorye,
Qinghai,
Queensland,
Romania,
Sardegna,
Saudi Arabia,
Selvagens,
Sicilia,
Sinai,
Socotra,
Somalia,
South Australia,
South European Russi,
Spain,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Tasmania,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
Victoria,
West Himalaya,
West Siberia,
Western Australia,
Western Sahara,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Amsterdam-St.Paul Is,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Bermuda,
Bolivia,
Botswana,
Brazil South,
British Columbia,
Chile Central,
Chile North,
Chile South,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Cuba,
Delaware,
Desventurados Is.,
District of Columbia,
Dominican Republic,
Ecuador,
El Salvador,
Florida,
Free State,
Galápagos,
Georgia,
Guatemala,
Haiti,
Hawaii,
Honduras,
Idaho,
Illinois,
Indiana,
Iowa,
Japan,
Juan Fernández Is.,
Kamchatka,
Kansas,
Kentucky,
Kenya,
Khabarovsk,
Kuril Is.,
KwaZulu-Natal,
Lesotho,
Louisiana,
Magadan,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Northeast,
Mexico Southwest,
Michigan,
Minnesota,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Caledonia,
New Hampshire,
New Jersey,
New Mexico,
New York,
New Zealand North,
Newfoundland,
Norfolk Is.,
North Carolina,
North Dakota,
Northern Provinces,
Northwest Territorie,
Nova Scotia,
Ogasawara-shoto,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Prince Edward I.,
Québec,
Rhode I.,
Rwanda,
Réunion,
Sakhalin,
Saskatchewan,
South Carolina,
South Dakota,
Sri Lanka,
St.Helena,
Taiwan,
Tanzania,
Tennessee,
Texas,
Tristan da Cunha,
Uganda,
Uruguay,
Utah,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Zaïre,
Zimbabwe