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 Rus,
Chad,
Colombia,
Congo,
Cuba,
Czechoslovakia,
Dominican Republic,
East European Russia,
East Himalaya,
Ecuador,
Ethiopia,
Galápagos,
Guinea,
Hawaii,
Honduras,
Illinois,
India,
Iraq,
Jawa,
Kazakhstan,
Kenya,
Kirgizstan,
Maryland,
Mongolia,
Myanmar,
Nepal,
Niue,
Norfolk Is.,
North Caucasus,
North European Russi,
Pakistan,
Puerto Rico,
Samoa,
South European Russi,
Sri Lanka,
Tadzhikistan,
Tanzania,
Transcaucasus,
Trinidad-Tobago,
Turkmenistan,
Ukraine,
Uzbekistan,
Vermont,
West Himalaya,
Wisconsin