Native to:
Amur,
China North-Central,
China South-Central,
China Southeast,
Hainan,
Inner Mongolia,
Japan,
Khabarovsk,
Korea,
Laos,
Manchuria,
Nansei-shoto,
Primorye,
Qinghai,
Taiwan,
Thailand,
Tibet,
Vietnam,
Xinjiang
Introduced into:
Alabama,
Assam,
Baltic States,
Bangladesh,
Belarus,
Benin,
Cambodia,
Cameroon,
Cayman Is.,
Central European Russia,
Chad,
Colombia,
Congo,
Cuba,
Czechoslovakia,
Dominican Republic,
East European Russia,
East Himalaya,
Ecuador,
Ethiopia,
Galápagos,
Germany,
Great Britain,
Guinea,
Honduras,
Illinois,
India,
Iraq,
Ireland,
Jawa,
Kazakhstan,
Kenya,
Kirgizstan,
Maryland,
Mongolia,
Myanmar,
Nepal,
New Caledonia,
New Guinea,
North Caucasus,
North European Russia,
Pakistan,
Philippines,
Puerto Rico,
Queensland,
South European Russia,
Sri Lanka,
Tadzhikistan,
Tanzania,
Transcaucasus,
Trinidad-Tobago,
Turkmenistan,
Ukraine,
Uzbekistan,
Vermont,
West Himalaya,
Wisconsin