where is giant hogweed found in the us
Heracleum mantegazzianum Giant hogweed was introduced into New York about 1917, and was recorded in British Columbia in the 1930s. It now occurs in the west in British Columbia, Washington, and Oregon and in eastern North America from Newfoundland and Nova Scotia west to Ontario and Wisconsin and south to Indiana, Maryland, and New Jersey.[13][14] It is also recorded occasionally in Michigan[15] It is a federally listed noxious weed in many states.[13]