Native to:
Afghanistan,
Assam,
Bangladesh,
Cambodia,
China North-Central,
China South-Central,
China Southeast,
East Himalaya,
Hainan,
India,
Japan,
Kazan-retto,
Kirgizstan,
Korea,
Laos,
Malaya,
Myanmar,
Nansei-shoto,
Nepal,
Ogasawara-shoto,
Pakistan,
Philippines,
Qinghai,
Sri Lanka,
Tadzhikistan,
Taiwan,
Thailand,
Tibet,
Uzbekistan,
Vietnam,
West Himalaya
Introduced into:
Alabama,
Arkansas,
Bahamas,
Cayman Is.,
Colombia,
Comoros,
Costa Rica,
Cuba,
District of Columbia,
Dominican Republic,
El Salvador,
Fiji,
Florida,
Georgia,
Guatemala,
Guyana,
Haiti,
Hawaii,
Honduras,
Jamaica,
Jawa,
Kentucky,
KwaZulu-Natal,
Leeward Is.,
Louisiana,
Madagascar,
Marianas,
Maryland,
Mauritius,
Mexico Central,
Mississippi,
New Caledonia,
New South Wales,
New York,
Nicaragua,
North Carolina,
Panamá,
Paraguay,
Pennsylvania,
Puerto Rico,
Queensland,
Rodrigues,
Réunion,
Samoa,
Seychelles,
Sicilia,
Society Is.,
South Carolina,
Tennessee,
Texas,
Tonga,
Trinidad-Tobago,
Vanuatu,
Venezuela,
Virginia,
Windward Is.