Native to:
Albania,
Altay,
Amur,
Buryatiya,
China North-Central,
China South-Central,
China Southeast,
Chita,
Inner Mongolia,
Irkutsk,
Italy,
Japan,
Kazakhstan,
Khabarovsk,
Korea,
Krasnoyarsk,
Kuril Is.,
Manchuria,
Mongolia,
Nansei-shoto,
Primorye,
Sakhalin,
Taiwan,
Tuva,
West Siberia,
Yakutskiya,
Yugoslavia
Introduced into:
Alabama,
Arkansas,
Assam,
Austria,
Azores,
Bangladesh,
Belgium,
Bulgaria,
Central European Rus,
Colorado,
Connecticut,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
District of Columbia,
Dominican Republic,
East Himalaya,
Fiji,
Florida,
France,
Georgia,
Germany,
Haiti,
Honduras,
Hungary,
Idaho,
Illinois,
Indiana,
Iowa,
Jamaica,
Kansas,
Kentucky,
Kirgizstan,
Leeward Is.,
Louisiana,
Maine,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nebraska,
Nepal,
New Brunswick,
New Hampshire,
New Jersey,
New York,
New Zealand North,
New Zealand South,
North Carolina,
North Caucasus,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Pakistan,
Panamá,
Pennsylvania,
Prince Edward I.,
Puerto Rico,
Québec,
Rhode I.,
Romania,
South Carolina,
South Dakota,
South European Russi,
Switzerland,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Turkey,
Ukraine,
Utah,
Vermont,
Virginia,
Washington,
West Himalaya,
West Virginia,
Windward Is.,
Wisconsin