Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Amur,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Canary Is.,
Cape Provinces,
Cape Verde,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
Egypt,
Finland,
France,
Free State,
Føroyar,
Germany,
Great Britain,
Greece,
Hainan,
Hungary,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
KwaZulu-Natal,
Lebanon-Syria,
Lesotho,
Madeira,
Magadan,
Manchuria,
Mongolia,
Morocco,
Namibia,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northern Provinces,
Northwest European R,
Norway,
Oman,
Pakistan,
Palestine,
Poland,
Portugal,
Primorye,
Qinghai,
Romania,
Sakhalin,
Sardegna,
Saudi Arabia,
Sicilia,
Sinai,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Ascension,
Assam,
Azores,
Bahamas,
Belize,
Bermuda,
Bolivia,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
California,
Cambodia,
Chagos Archipelago,
Chile Central,
Chile North,
Chile South,
Christmas I.,
Colombia,
Colorado,
Connecticut,
Cook Is.,
Costa Rica,
Cuba,
Delaware,
Desventurados Is.,
District of Columbia,
Dominican Republic,
Easter Is.,
El Salvador,
Eritrea,
Ethiopia,
Fiji,
Florida,
French Guiana,
Galápagos,
Georgia,
Greenland,
Guatemala,
Gulf of Guinea Is.,
Guyana,
Haiti,
Hawaii,
Honduras,
Iceland,
Idaho,
Illinois,
Indiana,
Iowa,
Jamaica,
Juan Fernández Is.,
Kansas,
Kentucky,
Kenya,
Labrador,
Laos,
Leeward Is.,
Lesser Sunda Is.,
Louisiana,
Maine,
Malaya,
Manitoba,
Marshall Is.,
Maryland,
Massachusetts,
Mauritius,
Mexico Central,
Mexico Northeast,
Mexico Northwest,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Myanmar,
Nebraska,
Nevada,
New Brunswick,
New Caledonia,
New Hampshire,
New Jersey,
New Mexico,
New York,
New Zealand North,
Newfoundland,
Nicaragua,
Niue,
Norfolk Is.,
North Carolina,
North Dakota,
Northwest Territorie,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Peru,
Pitcairn Is.,
Prince Edward I.,
Puerto Rico,
Québec,
Rhode I.,
Samoa,
Saskatchewan,
Seychelles,
Society Is.,
South Carolina,
South Dakota,
Southwest Caribbean,
St.Helena,
Suriname,
Tasmania,
Tennessee,
Texas,
Tonga,
Trinidad-Tobago,
Tristan da Cunha,
Tuamotu,
Tubuai Is.,
Uruguay,
Utah,
Vanuatu,
Venezuela,
Venezuelan Antilles,
Vermont,
Vietnam,
Virginia,
Washington,
West Virginia,
Windward Is.,
Wisconsin,
Wyoming,
Yukon,
Zambia,
Zaïre,
Zimbabwe