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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

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

Native To: Eurasia (Zouhar 2001)

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

Images: Invasive.org and Google

Video: University of Wyoming Extension Sustainable Management of Rangeland Resources Initiative Team - Russian Knapweed (or click Play button below)

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

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

Current U.S. Distribution:

U.S. States and U.S. National Parks Where Reported Invasive: Invasive Plant Atlas of the United States map

Management Plans: Plants / Knapweeds

Selected Internet Resources:

Federal Government

Rhaponticum repens
Integrated Taxonomic Information System.
Taxonomy

Acroptilon repens Article Citation Search - AGRICOLA Database
USDA. National Agricultural Library.
Research; Special Note: NAL Catalog Search (resources)

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

Acroptilon repens - Fire Effects Information System (FEIS)
USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.
Taxonomy; Identification/Description; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Controls; Special Note: References

Ecology and Management of Russian Knapweed - Invasive Species Technical Note MT-7 (Dec 2006; PDF | 401 KB)
USDA. Natural Resources Conservation Service.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Habitat; Distribution; Dispersion; Controls

Plant profile for Acroptilon repens PLANTS Database
USDA. NRCS. National Plant Data Center.
Taxonomy; Distribution; Legal Aspects

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State Government

Russian knapweed - EncycloWeedia
California Department of Food and Agriculture.
Identification/Description; Photographs; Habitat; Distribution; Dispersion; Controls

Russian Knapweed - Best Management Practices Weed Profile (PDF | 210 KB)
Colorado State Parks.
Identification/Description; Illustrations; Introduction History; Impacts; Habitat; Distribution; Controls; Special Note: References

Russian Knapweed
Colorado Department of Agriculture. Noxious Weed Management Program.
Identification/Description; Photographs; Introduction History; Impacts; Distribution; Controls

Russian Knapweed
State of Colorado. Douglas County. Public Works.
Identification/Description; Photographs; Controls

Russian Knapweed - Noxious Weed Identification List
State of Colorado. Jefferson County. Weed and Pest Management Program.
Identification/Description; Photographs; Controls

Russian Knapweed - Official Control Program
Kansas Department of Agriculture. Plant Protection and Weed Control Program.
Identification; Controls

Class B Noxious Weed: Russian Knapweed
Washington State Noxious Weed Control Board.
Taxonomy; Identification/Description; Photographs; Impacts; Habitat; Distribution; Dispersion; Controls; Legal Aspects

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University/Academic

Russian Knapweed - Invasive Plant Species of Alaska (PDF | 262 KB)
University of Alaska - Anchorage. Alaska Natural Heritage Program.
Identification/Description; Photographs; Impacts; Distribution; Special Note: References

Russian Knapweed - An Illustrated Guide to Arizona Weeds
University of Arizona Press.
Identification/Description; Illustrations; Distribution

Russian Knapweed
University of California. Statewide Integrated Pest Management Program.
Identification/Description; Photographs; Illustrations

Russian Knapweed
Colorado State University. Cooperative Extension.
Identification/Description; Illustrations; Life Cycle; Habitat; Controls

Russian Knapweed - Invasive Plant Atlas of the United States
University of Georgia. Center for Invasive Species and Ecosystem Health.
Taxonomy; Identification/Description; Photographs; Introduction History; Distribution

Russian Knapweed Wanted Poster--Dead, Not Alive! (PDF | 163 KB)
University of Nevada - Reno. Cooperative Extension.
Identification/Description; Habitat; Photographs

Management of Russian Knapweed in Nevada (PDF | 2.57 MB) and Managing Russian Knapweed (PDF | 214 KB)
University of Nevada - Reno. Cooperative Extension.
Identification/Description; Photographs; Impacts; Habitat; Controls

Know Your Knapweeds (PDF | 153 KB)
North Dakota State University. Department of Plant Sciences.
Identification/Description; Photographs; Controls

Russian Knapweed
Northern State University. Center for Environmental Education.
Identification/Description; Illustrations; Introduction History; Distribution; Controls

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International

Russian Knapweed - Guide to Weeds in British Columbia
British Columbia Ministry of Agriculture Food and Fisheries (Canada).
Identification/Description; Photographs; Illustrations; Impacts; Life Cycle; Habitat; Distribution; Dispersion; Controls

Rhaponticum repens - Invasive Species Compendium
Centre for Agricultural Bioscience International (CABI).
Taxonomy; Identification/Description; Photographs; Impacts; Life Cycle; Habitat; Distribution; Controls

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Organizations

Russian Knapweed
Colorado Weed Management Association.
Identification/Description; Photographs; Life Cycle; Habitat; Distribution; Dispersion

Russian Knapweed
Montana Weed Control Association.
Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Dispersion; Controls

Acroptilon repens
Texasinvasives.org.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Dispersion; Controls; Special Note: References

Citations

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: Apr 16, 2014
 
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