Native to:
Afghanistan,
Albania,
Austria,
Azores,
Baleares,
Belgium,
Bulgaria,
China North-Central,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
East Himalaya,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Iran,
Ireland,
Italy,
Kazakhstan,
Kirgizstan,
Kriti,
Krym,
Netherlands,
North Caucasus,
North European Russia,
Norway,
Poland,
Portugal,
Qinghai,
Romania,
Sardegna,
Sicilia,
South European Russia,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uzbekistan,
Xinjiang,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Argentina Northeast,
Argentina South,
Arizona,
Arkansas,
Baltic States,
British Columbia,
California,
Chile South,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Florida,
Føroyar,
Georgia,
Iceland,
Idaho,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
Korea,
Louisiana,
Maine,
Maryland,
Massachusetts,
Michigan,
Mississippi,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
North Dakota,
Northwest European Russia,
Northwest Territories,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Australia,
South Carolina,
Tennessee,
Texas,
Utah,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming