Northern America Mexico Mexico Central Mexico Gulf Mexico Northeast Mexico Northwest Mexico Southwest North-Central U.S.A. Kansas Missouri Nebraska South Dakota Northeastern U.S.A. New Jersey Pennsylvania Vermont Northwestern U.S.A. Colorado Oregon Washington Wyoming South-Central U.S.A. New Mexico Texas Southeastern U.S.A. Florida Georgia Kentucky Louisiana Mississippi North Carolina South Carolina Virginia Southwestern U.S.A. California Introduced into Africa Northern Africa Algeria Tunisia Southern Africa Cape Provinces Free State Europe Eastern Europe South European Russia Southeastern Europe Greece Southwestern Europe Portugal Spain Northern America Northeastern U.S.A. New York Southeastern U.S.A. Alabama Maryland Tennessee

Northern America Mexico Mexico Central Mexico Gulf Mexico Northeast Mexico Northwest Mexico Southwest North-Central U.S.A. Kansas Missouri Nebraska South Dakota Northeastern U.S.A. New Jersey Pennsylvania Vermont Northwestern U.S.A. Colorado Oregon Washington Wyoming South-Central U.S.A. New Mexico Texas Southeastern U.S.A. Florida Georgia Kentucky Louisiana Mississippi North Carolina South Carolina Virginia Southwestern U.S.A. California Introduced into Africa Northern Africa Algeria Tunisia Southern Africa Cape Provinces Free State Europe Eastern Europe South European Russia Southeastern Europe Greece Southwestern Europe Portugal Spain Northern America Northeastern U.S.A. New York Southeastern U.S.A. Alabama Maryland Tennessee