Exotic Pest Reporting
Thomas B. Denholm, New Jersey Department of Agriculture, Bugwood.org
Giant Hogweed (Heracleum mantegazzianum) is an invasive plant. It is a native of Caucasus and was first detected in North America in the early 1900's.
Also known as Cow Parsley, this weed grows to 6 to 16 feet high and has a dark red stem up to 3 inches in diameter. It lives for 5 to 7 years and flowers in its final year, producing umbrella shaped clusters of small white flowers up to 31 inches in diameter. Contact to bare skin can cause photodermatitis, resulting in blisters and scars.
Summaries of State Plant Protection Laws and Regulations
05/29/2015 - Giant Hogweed | University of Maryland Extension
09/29/2014 - Be on the Lookout for Giant Hogweed
08/19/2014 - Be on the Lookout for Giant Hogweed
08/11/2014 - Giant Hogweed Spreading Throughout New York State
06/18/2014 - Giant Hogweed
06/17/2014 - Blackface Sheep Winning Giant Hogweed Battle
05/07/2014 - Dundee City Council Targets Giant Hogweed Numbers
02/27/2014 - Invasive Species Legislation Introduced