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You are here: Home / Plants / Species Profiles / Giant Hogweed
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Species Profiles

Giant Hogweed

Giant HogweedScientific name: Heracleum mantegazzianum Sommier & Levier (ITIS)

Common names: Giant hogweed, cartwheel-flower

Click image to enlarge

Selected Resources

Native To: Caucasus Mountains and southwest Asia (University of Connecticut 2009)

Date of U.S. Introduction: 1917 (University of Connecticut 2009)

Means of Introduction: Ornamental (University of Connecticut 2009)

Impacts: Crowds out native species; produces toxic sap that can cause skin irritation and blindness (University of Connecticut 2009)

Current U.S. Distribution:

Federally Regulated:

  • Listed as a Federal Noxious Weed under the Plant Protection Act, which makes it illegal in the U.S. to import, export, or transport between States without a permit (USDA, APHIS - Noxious Weeds Program)

Images:

Video:

Selected Resources:

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Council

Fact Sheet: Giant Hogweed (Jan 2014; PDF | 804 KB)
Alberta Invasive Plants Council (Canada).

Partnership

Invasive Plant Atlas of New England (IPANE) - Giant hogweed, Giant cow parsnip
University of Georgia. Center for Invasive Species and Ecosystem Health.

Invasive Plant Atlas of the United States - Giant Hogweed
University of Georgia. Center for Invasive Species and Ecosystem Health.

Fact Sheet: Giant Hogweed
Massachusetts Introduced Pests Outreach Project.

Texas Invasives Database - Heracleum mantegazzianum
TexasInvasives.org.

Invasive Species Compendium - Heracleum mantegazzianum
CAB International.

Delivering Alien Invasive Species Inventories for Europe (DAISIE): Species Factsheet - Heracleum mantegazzianum
European Commission. Sixth Framework Programme.

Data Sheets on Invasive Plants - Heracleum mantegazzianum (PDF | 58 KB)
European and Mediterranean Plant Protection Organization.

Giant Hogweed
Great Britain Non-Native Species Secretariat.

New York Invasive Species Information - Giant Hogweed
New York Invasive Species Clearinghouse.

Invasive Alien Species Fact Sheet: Heracleum mantegazzianum (PDF | 590 KB)
North European and Baltic Network on Invasive Alien Species.

Global Invasive Species Database - Heracleum mantegazzianum (herb)
World Conservation Union. Invasive Species Specialist Group.

Government

Heracleum mantegazzianum Sommier & Levier (Giant Hogweed) - Aquatic Plant Information System (APIS)
DOD. USACE. Engineer Research and Development Center. Environmental Laboratory.

Germplasm Resources Information Network (GRIN) - Heracleum mantegazzianum
USDA. ARS. National Genetic Resources Program.

Heracleum mantegazzianum - Fire Effects Information System (FEIS)
USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.

Giant Hogweed - Conservation Practice Job Sheet VT-315 (PDF | 125 KB)
USDA. Natural Resources Conservation Service.

PLANTS Database - Giant Hogweed
USDA. NRCS. National Plant Data Center.

Giant Hogweed - Field Guide to Noxious and Other Selected Weeds of British Columbia
British Columbia Ministry of Agriculture, Food, and Fisheries (Canada).

Giant Alien Project
Giant Alien (Europe).
Giant Alien Project (2002-2005) has been financed by the European Commission within the 5th Framework Programme, Energy, Environment and Sustainable Development.

Giant Hogweed (PDF | 1.20 MB)
Ontario Ministry of Natural Resources (Canada).

State

Giant Hogweed (PDF | 334 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.

Giant Hogweed: Do Not Touch This Plant!
New York Department of Environmental Conservation.

Plant Pest Risk Assessment for Giant Hogweed, Heracleum mantegazzianum (2013; PDF | 3.89 MB)
Oregon Department of Agriculture.

Giant Hogweed (PDF | 776 KB)
Pennsylvania Department of Agriculture. Plant Industry.

Invasive Plants in Pennsylvania: Giant Hogweed (PDF | 180 KB)
Pennsylvania Department of Conservation and Natural Resources.

Class A Noxious Weed: Giant Hogweed
Washington State Noxious Weed Control Board.

Best Management Practices: Giant Hogweed (PDF | 490 KB)
King County (Washington). Noxious Weed Control Program.

Giant Hogweed (Heracleum mantegazzianum)
Wisconsin Department of Natural Resources.

Academic

Giant Hogweed - Invasive Plant Species of Alaska (PDF | 235 KB)
University of Alaska - Anchorage. Alaska Natural Heritage Program.

Weed Control in Natural Areas in the Western United States: Giant Hogweed (2013; PDF | 218 KB)
University of California. Weed Research and Information Center.

The Infamous Giant Hogweed (Oct 2004; PDF | 450 KB)
Purdue University Extension. Weed Science.

Giant Hogweed - MSU Extension Bullein E-2935 (Jun 2012; PDF | 3.03 MB)
Michigan State University. Extension.

Giant Hogweed (Heracleum mantegazzianum) - Poisonous Invader of the Northeast (Aug 2009; PDF | 888 KB)
SUNY College at Brockport. New York Sea Grant.

Professional

Giant Hogweed in Connecticut
Connecticut Invasive Plant Working Group.

BioBullies - Giant Hogweed
Natural Biodiversity (Western Pennsylvania).

Giant Hogweed
Ontario Federation of Anglers and Hunters (Canada).

Citations

Integrated Taxonomic Information System. Heracleum mantegazzianum. [Accessed Mar 19, 2015].

University of Connecticut. 2009. Giant hogweed. Invasive Plant Atlas of New England (IPANE).

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Last Modified: Aug 22, 2015
 
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