Pest Tracker
Exotic Pest Reporting
![]() Thomas B. Denholm, New Jersey Department of Agriculture, Bugwood.org |
Giant hogweed
Heracleum mantegazzianum 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.
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News
07/22/2020 - Giant hogweed 'mother plant' found in Derry
07/22/2020 - Giant hogweed control efforts Âongoing in Racine
06/04/2020 - Giant Hogweed and Wild Parsnip: Do Not Touch!
03/19/2020 - Shocking growth as giant hogweed returns early
10/01/2019 - Climate change abatement and ash dieback disease
08/19/2019 - Limerick project to control spread of Giant Hogweed
07/26/2019 - Plants That Give You A Rash Besides Poison Ivy, Oak
07/23/2019 - The 15 Worst Invasive Plants in America
07/17/2019 - Why you should not touch the giant hogweed plant
07/09/2019 - 2018 Giant Hogweed Eradication Efforts Report Issued
07/09/2019 - Toxic giant hogweed plant spotted in Kidderminster
05/16/2019 - Help Coquitlam rid itself of invasive plant species
05/07/2019 - Group warns of hogweed spread | Rome Daily Sentinel
10/14/2018 - On the trail of hogweed and other invasive plants
07/30/2018 - Battle of the hogweed in Coquitlam
07/30/2018 - Giant hogweed's rep spreads locally, plant hasn't
07/30/2018 - Health Alert: Dangerous plants
07/23/2018 - Giant hogweed could pose danger to West Virginians
07/23/2018 - Giant hogweed deliberately planted in Clarke County
07/23/2018 - Invasive, Blinding Weed Spreads to Virginia
07/23/2018 - Massachusetts Steps Up to Eradicate Poisonous Plant
07/18/2018 - Beware the Giant Hogweed Plant
07/18/2018 - Dangers of hogweed
07/18/2018 - Giant hogweed is spreading across Western New York
07/18/2018 - Giant hogweed plant: don't touch
07/18/2018 - New reference guide of poisonous plants released
07/18/2018 - What to do if you see dangerous hogweed
07/16/2018 - How to safely remove invasive giant hogweed plant
08/11/2017 - Toxic hogweed plant spreading in Canada
08/07/2017 - Dangerous Hogweed Spreading Across Island
08/01/2017 - To Every Weed There Is a Season
06/10/2016 - Nova Scotia woman warns of run-in with giant hogweed
08/04/2015 - Plant that can blind you found in Michigan
07/27/2015 - How hogweed is taking over the British countryside
07/22/2015 - Hogweed isn’t going anywhere
07/16/2015 - DEC Joins Hogweed Fight At Delaware County Patch
07/16/2015 - Massachusettes plant can cause serious burns
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
06/17/2014 - Blackface Sheep Winning Giant Hogweed Battle
05/07/2014 - Dundee City Council Targets Giant Hogweed Numbers
02/27/2014 - Invasive Species Legislation Introduced
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