Native to:
China North-Central,
China South-Central,
China Southeast,
East Himalaya,
Japan,
Korea
Introduced into:
Alabama,
Argentina South,
Assam,
Belgium,
British Columbia,
Bulgaria,
California,
Canary Is.,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Florida,
France,
Georgia,
Germany,
Gilbert Is.,
Great Britain,
Greece,
Guatemala,
Gulf of Guinea Is.,
Illinois,
India,
Indiana,
Iowa,
Ireland,
Kansas,
Kazakhstan,
Kentucky,
Louisiana,
Madeira,
Maine,
Maryland,
Massachusetts,
Mexico Southeast,
Michigan,
Minnesota,
Mississippi,
Missouri,
Morocco,
Nebraska,
Netherlands,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Poland,
Québec,
Rhode I.,
South Carolina,
Spain,
Tennessee,
Texas,
Utah,
Uzbekistan,
Vermont,
Virginia,
Washington,
West Himalaya,
West Virginia,
Wisconsin