Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Amur,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
East Himalaya,
Egypt,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kazakhstan,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Laos,
Lebanon-Syria,
Madeira,
Manchuria,
Morocco,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Poland,
Portugal,
Qinghai,
Romania,
Sardegna,
Saudi Arabia,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uzbekistan,
Vietnam,
West Himalaya,
West Siberia,
Xinjiang,
Yemen,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Bolivia,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
California,
Chile Central,
Chile North,
Chile South,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Falkland Is.,
Florida,
Føroyar,
Georgia,
Greenland,
Iceland,
Idaho,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
Kriti,
Labrador,
Louisiana,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
Newfoundland,
North Carolina,
North Dakota,
Northern Territory,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Primorye,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Saskatchewan,
South Australia,
South Carolina,
South Dakota,
Tasmania,
Tennessee,
Texas,
Uganda,
Utah,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Western Australia,
Wisconsin,
Wyoming,
Yukon