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You are here: Home / Plants / Species Profiles / Russian Knapweed
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Species Profiles

Russian Knapweed

Russian Knapweed

Scientific name: Rhaponticum repens (L.) Hidalgo (ITIS)

Synonyms: Centaurea repens (L.), Acroptilon repens (L.) DC.

Common names: Russian knapweed, Turestan thistle, creeping knapweed, mountain bluet, Russian cornflower, hardheads

Click image to enlarge

Selected Resources

Native To: Eurasia (Zouhar 2001)

Date of U.S. Introduction: Early 1900s (Zouhar 2001)

Means of Introduction: Accidentally as a seed contaminant (Zouhar 2001)

Impacts: Crowds out native species and desirable forage; toxic to horses (Zouhar 2001)

Current U.S. Distribution:

Images:

Video:

  • Russian Knapweed (or select Play button below)
    University of Wyoming Extension. Sustainable Management of Rangeland Resources Initiative Team. (YouTube)

Selected Resources:

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Council

Fact Sheet: Russian Knapweed (Jan 2014; PDF | 436 KB)
Alberta Invasive Plants Council (Canada).

Russian Knapweed (PDF | 1.95 MB)
Saskatchewan Invasive Species Council (Canada).

Partnership

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

Texas Invasives Database - Acroptilon repens
TexasInvasives.org.

Invasive Species Compendium - Rhaponticum repens
CAB International.

Government

Rhaponticum repens (L.) Hidalgo - Germplasm Resources Information Network (GRIN)
USDA. ARS. National Genetic Resources Program.

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

Field Guide for Managing Russian Knapweed in the Southwest (Dec 2012; PDF | 2.38 MB)
USDA. FS. Southwestern Region.

Ecology and Management of Russian Knapweed - Invasive Species Technical Note MT-7 (Dec 2006; PDF | 401 KB)
USDA. Natural Resources Conservation Service.

PLANTS Database - Hardheads
USDA. NRCS. National Plant Data Center.

Russian Knapweed - Guide to Weeds in British Columbia
British Columbia Ministry of Agriculture Food and Fisheries (Canada).

State

Russian knapweed - EncycloWeedia
California Department of Food and Agriculture.

Russian Knapweed - Best Management Practices Weed Profile (PDF | 210 KB)
Colorado State Parks.

Class B Noxious Weed: Russian Knapweed
Washington State Noxious Weed Control Board.

Academic

Russian Knapweed - Invasive Plant Species of Alaska (PDF | 262 KB)
University of Alaska - Anchorage. Alaska Natural Heritage Program.

Russian Knapweed
University of California. Statewide Integrated Pest Management Program.

Russian Knapweed
Colorado State University. Cooperative Extension.

Managing Russian Knapweed (PDF | 214 KB)
University of Nevada - Reno. Cooperative Extension.

Weed Factsheet - Russian Knapweed (PDF | 203 KB)
New Mexico State University.

Know Your Knapweeds (PDF | 153 KB)
North Dakota State University. Department of Plant Sciences.

Professional

Russian Knapweed
Colorado Weed Management Association.

Weed Identification - Russian Knapweed
Montana Weed Control Association.

Citations

Integrated Taxonomic Information System. Rhaponticum repens. [Accessed Sep 10, 2014].

Zouhar, K.L. 2001. Acroptilon repens. In: Fire Effects Information System. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.

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Last Modified: May 16, 2015
 
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