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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:

  • Noxious Weeds Program
    USDA. APHIS. Plant Protection and Quarantine.
    Includes species listed as a Federal Noxious Weed under the Plant Protection Act, which makes it illegal in the U.S. to import or transport between States without a permit.

Images:

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Selected Resources:

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Council or Task Force

Fact Sheet: Giant Hogweed (Jan 2014; PDF | 804 KB)
Alberta Invasive Species Council (Canada).
See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act.

Partnership

Federal Noxious Weed Disseminules of the U.S. - Fact Sheet:
Heracleum mantegazzianum

USDA. APHIS. PPQ. Center for Plant Health Science and Technology; California Department of Food and Agriculture.

Alaska Exotic Plants Information Clearinghouse (AKEPIC): Species Biography - Giant Hogweed (Feb 7, 2011; PDF | 235 KB)
University of Alaska - Anchorage. Alaska Center for Conservation Science.
See also: Non-Native Plant Species List for additional factsheets (species biographies) and species risk assessment reports of non-native species present in Alaska and also non-native species currently not recorded in Alaska (potential invasives).

Giant Hogweed in Connecticut
University of Connecticut. Connecticut Invasive Plant Working Group.

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.

Non-native Species Information: Giant Hogweed
Great Britain Non-Native Species Secretariat.

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

NOBANIS: Invasive Alien Species Fact Sheet - Heracleum mantegazzianum (2007; PDF | 590 KB)
European Network on Invasive Alien Species.

Global Invasive Species Database - Heracleum mantegazzianum (herb)
IUCN. Species Survival Commission. Invasive Species Specialist Group.

Federal Government

U.S. National Plant Germplasm System - Heracleum mantegazzianum
USDA. ARS. National Genetic Resources Program. GRIN-Global.

Fire Effects Information System (FEIS) - Heracleum mantegazzianum
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.

International Government

Weeds in Australia - Giant Hogweed (Heracleum mantegazzianum)
Australian Government. Department of the Environment and Energy.

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 Government

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 | 1.31 MB)
Pennsylvania Department of Agriculture. Plant Industry.

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

See also: Invasive Plants fact sheets (scroll to view) for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands.

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

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 Bulletin 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

BioBullies - Giant Hogweed
Natural Biodiversity (Western Pennsylvania).
See also: Invasive Species Fact Sheets for the worst trouble-makers in the region, and also for additional trouble-makers for you to watch out for.

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.

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Last Modified: Aug 14, 2016
 
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