Native to:
Alabama,
Andaman Is.,
Arizona,
Arkansas,
Assam,
Bangladesh,
Bolivia,
Cambodia,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Connecticut,
Costa Rica,
District of Columbia,
East Himalaya,
Ecuador,
El Salvador,
Florida,
Georgia,
Guatemala,
Hainan,
Honduras,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Japan,
Jawa,
Kansas,
Kentucky,
Korea,
Kuril Is.,
Laos,
Louisiana,
Manchuria,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Myanmar,
Nansei-shoto,
Nebraska,
Nepal,
New Jersey,
New Mexico,
New York,
North Carolina,
Ogasawara-shoto,
Ohio,
Oklahoma,
Ontario,
Pakistan,
Pennsylvania,
Peru,
Rhode I.,
Sakhalin,
South Carolina,
South China Sea,
Sumatera,
Taiwan,
Tennessee,
Texas,
Thailand,
Tibet,
Vermont,
Vietnam,
Virginia,
West Himalaya,
West Virginia,
Wisconsin
Introduced into:
Afghanistan,
Albania,
Algeria,
Argentina Northeast,
Argentina Northwest,
Ascension,
Austria,
Bermuda,
Bulgaria,
Buryatiya,
Cameroon,
Canary Is.,
Cape Provinces,
Central African Republic,
Chagos Archipelago,
Colorado,
Comoros,
Cook Is.,
Cuba,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
East Aegean Is.,
Eritrea,
Ethiopia,
Fiji,
Free State,
Gambia,
Great Britain,
Greece,
Hawaii,
Hungary,
Iraq,
Italy,
Kazakhstan,
Kirgizstan,
Kriti,
Krym,
KwaZulu-Natal,
Lebanon-Syria,
Leeward Is.,
Lesotho,
Libya,
Madeira,
Maine,
Marianas,
Mauritius,
Morocco,
New Hampshire,
Norfolk Is.,
North Dakota,
Northern Provinces,
Oman,
Palestine,
Paraguay,
Philippines,
Poland,
Primorye,
Puerto Rico,
Qinghai,
Romania,
Rwanda,
Réunion,
Society Is.,
South Dakota,
South European Russia,
Spain,
Sri Lanka,
Sudan,
Swaziland,
Sweden,
Tadzhikistan,
Tonga,
Transcaucasus,
Trinidad-Tobago,
Tuamotu,
Tubuai Is.,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uruguay,
Uzbekistan,
Vanuatu,
Venezuela,
Windward Is.,
Xinjiang,
Zaïre