Native to:
Alaska,
Alberta,
Altay,
Amur,
Arizona,
Arkansas,
British Columbia,
Buryatiya,
California,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Irkutsk,
Kamchatka,
Kansas,
Kentucky,
Khabarovsk,
Krasnoyarsk,
Kuril Is.,
Magadan,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Northeast,
Michigan,
Minnesota,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
Northwest Territorie,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Sakhalin,
Saskatchewan,
South Carolina,
South Dakota,
Tadzhikistan,
Tennessee,
Texas,
Transcaucasus,
Utah,
Uzbekistan,
Vermont,
Virginia,
Washington,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Yakutskiya,
Yukon
Introduced into:
Argentina Northeast,
Argentina Northwest,
Argentina South,
Austria,
Belgium,
Central European Rus,
Chile South,
Czechoslovakia,
Denmark,
East European Russia,
Falkland Is.,
Finland,
Germany,
Great Britain,
Italy,
Japan,
Korea,
Labrador,
Lesotho,
Mongolia,
Netherlands,
New Zealand South,
North European Russi,
Northwest European R,
Norway,
South European Russi,
Sweden,
Switzerland,
Ukraine,
Yugoslavia