Native to:
Assam,
Cameroon,
Cape Provinces,
China North-Central,
China South-Central,
China Southeast,
East Himalaya,
Ethiopia,
Free State,
Hawaii,
India,
Japan,
Kazan-retto,
Kenya,
Korea,
KwaZulu-Natal,
Lesotho,
Madagascar,
Malawi,
Manchuria,
Myanmar,
Nansei-shoto,
Nepal,
Northern Provinces,
Ogasawara-shoto,
Pakistan,
Philippines,
Taiwan,
Tanzania,
Thailand,
Tibet,
Uganda,
Vietnam,
West Himalaya
Introduced into:
Alabama,
Argentina Northeast,
Arkansas,
Austria,
Azores,
Baleares,
Belgium,
Bermuda,
California,
Canary Is.,
Connecticut,
Czechia-Slovakia,
Falkland Is.,
Florida,
France,
Georgia,
Germany,
Great Britain,
Hungary,
Ireland,
Italy,
Kentucky,
Louisiana,
Madeira,
Maryland,
Mississippi,
Netherlands,
New Jersey,
New South Wales,
New York,
Norfolk Is.,
NW. Balkan Pen.,
Ohio,
Oregon,
Palestine,
Peru,
Queensland,
Romania,
Sardegna,
Selvagens,
Sicilia,
South Australia,
South Carolina,
Spain,
Switzerland,
Tennessee,
Texas,
Victoria,
Virginia