Northern America Eastern Canada Ontario North-Central U.S.A. Illinois Iowa Kansas Minnesota Missouri Nebraska Oklahoma South Dakota Wisconsin Northeastern U.S.A. Connecticut Indiana Masachusettes Michigan New York Ohio Pennsylvania West Virginia South-Central U.S.A. Texas Southeastern U.S.A. Arkansas Kentucky Maryland Mississippi Tennessee Virginia Introduced into Asia-Temperate Caucasus North Caucasus Transcaucasus Middle Asia Kazakhstan Kirgizistan Tadzhikistan Uzbekistan Europe Eastern Europe Baltic States Belarus Central European Russia South European Russia Ukraine Southeastern Europe Bulgaria Northern America Eastern Canada Québec North-Central U.S.A. North Dakota Northeastern U.S.A. Maine New Jersey Southeastern U.S.A. Delaware District of Columbia Georgia North Carolina South Carolina

Northern America Eastern Canada Ontario North-Central U.S.A. Illinois Iowa Kansas Minnesota Missouri Nebraska Oklahoma South Dakota Wisconsin Northeastern U.S.A. Connecticut Indiana Masachusettes Michigan New York Ohio Pennsylvania West Virginia South-Central U.S.A. Texas Southeastern U.S.A. Arkansas Kentucky Maryland Mississippi Tennessee Virginia Introduced into Asia-Temperate Caucasus North Caucasus Transcaucasus Middle Asia Kazakhstan Kirgizistan Tadzhikistan Uzbekistan Europe Eastern Europe Baltic States Belarus Central European Russia South European Russia Ukraine Southeastern Europe Bulgaria Northern America Eastern Canada Québec North-Central U.S.A. North Dakota Northeastern U.S.A. Maine New Jersey Southeastern U.S.A. Delaware District of Columbia Georgia North Carolina South Carolina