Native to:
Afghanistan,
Alabama,
Albania,
Algeria,
Altay,
Argentina Northeast,
Argentina Northwest,
Arizona,
Arkansas,
Assam,
Austria,
Bahamas,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
Bolivia,
Botswana,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Bulgaria,
Burundi,
California,
Canary Is.,
Cape Provinces,
Cape Verde,
Cayman Is.,
Central European Rus,
Chad,
Chile North,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Connecticut,
Corse,
Costa Rica,
Cuba,
Cyprus,
Czechoslovakia,
Dominican Republic,
East Aegean Is.,
East European Russia,
East Himalaya,
Ecuador,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Florida,
France,
Free State,
Galápagos,
Georgia,
Germany,
Great Britain,
Greece,
Guatemala,
Gulf States,
Hainan,
Haiti,
Honduras,
Hungary,
Idaho,
Illinois,
India,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Italy,
Jamaica,
Japan,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
KwaZulu-Natal,
Lebanon-Syria,
Leeward Is.,
Lesotho,
Libya,
Louisiana,
Madagascar,
Madeira,
Malawi,
Mali,
Manchuria,
Maryland,
Mauritania,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Jersey,
New Mexico,
New South Wales,
New York,
Nicaragua,
Niger,
North Caucasus,
North Dakota,
North European Russi,
Northern Provinces,
Northwest European R,
Ohio,
Oklahoma,
Oman,
Oregon,
Pakistan,
Palestine,
Panamá,
Paraguay,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Puerto Rico,
Qinghai,
Queensland,
Romania,
Rwanda,
Sardegna,
Saudi Arabia,
Sicilia,
Sinai,
Somalia,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sudan,
Sumatera,
Swaziland,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Tibet,
Transcaucasus,
Trinidad-Tobago,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Turks-Caicos Is.,
Uganda,
Ukraine,
Uruguay,
Utah,
Uzbekistan,
Venezuela,
Venezuelan Antilles,
Victoria,
Vietnam,
Washington,
West Himalaya,
West Siberia,
Western Sahara,
Windward Is.,
Wisconsin,
Xinjiang,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Alberta,
Azores,
Bermuda,
British Columbia,
Central American Pac,
Comoros,
Cook Is.,
Delaware,
Denmark,
Fiji,
Gulf of Guinea Is.,
Hawaii,
Indiana,
Jawa,
Khabarovsk,
Lesser Sunda Is.,
Maine,
Malaya,
Manitoba,
Marquesas,
Massachusetts,
Michigan,
New Caledonia,
New Guinea,
New Hampshire,
New Zealand North,
New Zealand South,
Niue,
Norfolk Is.,
North Carolina,
Northern Territory,
Norway,
Ontario,
Pennsylvania,
Québec,
Rhode I.,
Samoa,
Society Is.,
Solomon Is.,
Sulawesi,
Sweden,
Tasmania,
Tonga,
Tuamotu,
Tubuai Is.,
Vanuatu,
Vermont,
Virginia,
West Virginia,
Wyoming