Native to:
Alabama,
Georgia,
Kentucky,
Maryland,
North Carolina,
Pennsylvania,
South Carolina,
Tennessee,
Virginia,
West Virginia
Introduced into:
Albania,
Algeria,
Argentina Northeast,
Arizona,
Arkansas,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
California,
Canary Is.,
Cape Provinces,
Central European Russia,
Chile Central,
China North-Central,
China South-Central,
China Southeast,
Colorado,
Connecticut,
Corse,
Czechoslovakia,
Delaware,
District of Columbia,
East Aegean Is.,
East European Russia,
Easter Is.,
Florida,
France,
Free State,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iraq,
Ireland,
Italy,
Japan,
Kansas,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Kriti,
Krym,
Kuril Is.,
KwaZulu-Natal,
Lebanon-Syria,
Lesotho,
Libya,
Louisiana,
Madeira,
Maine,
Manchuria,
Massachusetts,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Nebraska,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
New Zealand North,
New Zealand South,
North Caucasus,
North Dakota,
Northern Provinces,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Poland,
Primorye,
Qinghai,
Québec,
Rhode I.,
Romania,
Réunion,
Sakhalin,
Sardegna,
Sicilia,
South Dakota,
South European Russia,
Spain,
Switzerland,
Tadzhikistan,
Taiwan,
Texas,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Washington,
West Himalaya,
Wisconsin,
Wyoming,
Xinjiang,
Yugoslavia