Native to:
Amur,
China North-Central,
China South-Central,
China Southeast,
Fiji,
Hainan,
Inner Mongolia,
Japan,
Khabarovsk,
Korea,
Laos,
Manchuria,
Marianas,
Nansei-shoto,
New Caledonia,
New Guinea,
New South Wales,
Northern Territory,
Philippines,
Primorye,
Qinghai,
Queensland,
South Australia,
Taiwan,
Tasmania,
Thailand,
Tibet,
Tonga,
Vanuatu,
Victoria,
Vietnam,
Western Australia,
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,
Great Britain,
Guinea,
Hawaii,
Honduras,
Illinois,
India,
Iraq,
Ireland,
Jawa,
Kazakhstan,
Kenya,
Kirgizstan,
Maryland,
Mongolia,
Myanmar,
Nepal,
Niue,
Norfolk Is.,
North Caucasus,
North European Russia,
Pakistan,
Puerto Rico,
Samoa,
South European Russia,
Sri Lanka,
Tadzhikistan,
Tanzania,
Transcaucasus,
Trinidad-Tobago,
Turkmenistan,
Ukraine,
Uzbekistan,
Vermont,
West Himalaya,
Wisconsin