Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Corse,
Czechoslovakia,
Denmark,
Djibouti,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Ethiopia,
Finland,
France,
Germany,
Great Britain,
Greece,
Gulf States,
Hungary,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Italy,
Japan,
Kazakhstan,
Kirgizstan,
Korea,
Kriti,
Krym,
Lebanon-Syria,
Libya,
Manchuria,
Morocco,
Nansei-shoto,
Nepal,
Netherlands,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
Pakistan,
Philippines,
Poland,
Portugal,
Qinghai,
Romania,
Sardegna,
Saudi Arabia,
Sicilia,
South European Russia,
Spain,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uzbekistan,
West Himalaya,
Xinjiang,
Yugoslavia
Introduced into:
Alabama,
Alberta,
Argentina Northeast,
Argentina South,
Arkansas,
Bolivia,
British Columbia,
California,
Canary Is.,
Chile Central,
Chile South,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Florida,
Georgia,
Haiti,
Hawaii,
Idaho,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
Labrador,
Louisiana,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
Norfolk Is.,
North Carolina,
North Dakota,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Carolina,
South Dakota,
Tasmania,
Tennessee,
Texas,
Uruguay,
Utah,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming