Native to:
Afghanistan,
Albania,
Algeria,
Amur,
Assam,
Austria,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bulgaria,
Canary Is.,
Cape Provinces,
Cape Verde,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
Finland,
France,
Free State,
Germany,
Great Britain,
Greece,
Hainan,
Hungary,
Iceland,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Italy,
Japan,
Kazakhstan,
Kenya,
Khabarovsk,
Korea,
Kriti,
Krym,
Kuril Is.,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Lesotho,
Libya,
Madagascar,
Madeira,
Maluku,
Manchuria,
Morocco,
Myanmar,
Nansei-shoto,
Nepal,
Netherlands,
New Guinea,
New South Wales,
North Caucasus,
North European Russi,
Northern Provinces,
Northwest European R,
Norway,
Ogasawara-shoto,
Pakistan,
Palestine,
Philippines,
Poland,
Portugal,
Primorye,
Qinghai,
Queensland,
Romania,
Sakhalin,
Sardegna,
Saudi Arabia,
Sicilia,
Sinai,
South Australia,
South European Russi,
Spain,
Sudan,
Sulawesi,
Swaziland,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tasmania,
Thailand,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Ukraine,
Victoria,
Vietnam,
West Himalaya,
Western Sahara,
Yemen,
Yugoslavia,
Zaïre
Introduced into:
Alabama,
Arkansas,
British Columbia,
Connecticut,
Delaware,
District of Columbia,
Florida,
Georgia,
Illinois,
Indiana,
Iowa,
Irkutsk,
Kansas,
Kentucky,
Louisiana,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
New Hampshire,
New Jersey,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Québec,
Rhode I.,
South Carolina,
Tennessee,
Texas,
Utah,
Venezuela,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin