Native to:
Amur,
Assam,
Bangladesh,
Cambodia,
China North-Central,
China South-Central,
China Southeast,
East Himalaya,
Hainan,
India,
Iran,
Japan,
Jawa,
Khabarovsk,
Korea,
Laos,
Lesser Sunda Is.,
Malaya,
Manchuria,
Myanmar,
Nepal,
New Guinea,
North Caucasus,
Northern Territory,
Pakistan,
Philippines,
Primorye,
Queensland,
South European Russia,
Sri Lanka,
Thailand,
Transcaucasus,
Ukraine,
Vietnam,
West Himalaya,
Western Australia
Introduced into:
Alabama,
Arkansas,
Benin,
Cook Is.,
Cuba,
Florida,
Gabon,
Georgia,
Italy,
Kentucky,
Leeward Is.,
Louisiana,
Massachusetts,
Mississippi,
Missouri,
New Jersey,
North Carolina,
Puerto Rico,
Romania,
South Carolina,
Tennessee,
Texas,
Trinidad-Tobago,
Vanuatu,
West Virginia,
Windward Is.