Native to:
Afghanistan,
Albania,
Altay,
Amur,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Czechoslovakia,
Denmark,
East European Russia,
East Himalaya,
Finland,
France,
Germany,
Greece,
Hungary,
Inner Mongolia,
Iran,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Krasnoyarsk,
Krym,
Magadan,
Manchuria,
Mongolia,
Nansei-shoto,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Palestine,
Poland,
Portugal,
Primorye,
Qinghai,
Romania,
Sakhalin,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Algeria,
Argentina Northeast,
Argentina South,
Arizona,
Arkansas,
Azores,
Bermuda,
Bolivia,
Brazil Southeast,
British Columbia,
California,
Canary Is.,
Cape Provinces,
Chile South,
Colombia,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Florida,
Georgia,
Great Britain,
Guatemala,
Honduras,
Iceland,
Idaho,
Illinois,
India,
Indiana,
Iowa,
Ireland,
Kansas,
Kentucky,
Korea,
Labrador,
Louisiana,
Madeira,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
Newfoundland,
North Carolina,
North Dakota,
Northwest Territorie,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Carolina,
South Dakota,
South Georgia,
Taiwan,
Tasmania,
Tennessee,
Texas,
Utah,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Yukon