Native to:
Afghanistan,
Alabama,
Arkansas,
Assam,
Bangladesh,
China North-Central,
China South-Central,
China Southeast,
Delaware,
East Himalaya,
Florida,
Georgia,
Guatemala,
Hainan,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Japan,
Kansas,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Kuril Is.,
Laos,
Lebanon-Syria,
Louisiana,
Manchuria,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Mississippi,
Missouri,
Myanmar,
Nansei-shoto,
Nebraska,
Nepal,
New York,
North Carolina,
Ohio,
Oklahoma,
Pakistan,
Philippines,
Primorye,
Qinghai,
Sakhalin,
South Carolina,
Tadzhikistan,
Taiwan,
Tennessee,
Texas,
Tibet,
Turkey,
Turkmenistan,
Uzbekistan,
Vietnam,
Virginia,
West Himalaya,
West Virginia
Introduced into:
Connecticut,
District of Columbia,
Maryland,
Massachusetts,
Michigan,
New Hampshire,
New Jersey,
Pennsylvania,
Rhode I.,
Vermont,
Wisconsin