Native to:
Afghanistan,
Alabama,
Albania,
Arkansas,
Assam,
Bangladesh,
Bulgaria,
California,
China North-Central,
China South-Central,
China Southeast,
East Himalaya,
Florida,
Georgia,
Greece,
Illinois,
Indiana,
Iowa,
Japan,
Kansas,
Kentucky,
Laos,
Louisiana,
Maine,
Maryland,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Myanmar,
Nebraska,
Nepal,
New Hampshire,
New Jersey,
New York,
North Carolina,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
South Carolina,
Tennessee,
Texas,
Thailand,
Tibet,
Turkey,
Turkmenistan,
Vietnam,
Virginia,
West Himalaya,
West Virginia,
Wisconsin,
Yugoslavia
Introduced into:
Austria,
Belgium,
British Columbia,
Central European Russia,
Connecticut,
Czechoslovakia,
France,
Germany,
Great Britain,
Hungary,
Ireland,
Italy,
Kazakhstan,
Korea,
Massachusetts,
New Zealand South,
Poland,
Québec,
Romania,
South European Russia,
Spain,
Switzerland,
Uzbekistan,
Vermont,
Washington