This Class A noxious weed has a very limited distribution in Washington State; the only known site is in Pend Oreille County. Eradication of this knapweed is required throughout Washington State, including in King County. For more information on noxious weed regulations and definitions, see Noxious weed lists and laws.

This is one of several knapweed (Centaurea) species on our noxious weed list. The knapweeds are distinguished from each other by the bracts beneath the flower heads. The bracts of Vochin knapweed are long and slender with dark brown fringe tips.

Additional information on Vochin knapweed

• Washington State Noxious Weed Control Board (external link)
• Selected Knapweeds of Washington (316 KB Acrobat file)

What to do if you find this plant in King County, Washington

Please notify us if you see Vochin knapweed growing in King County. Our program staff can provide the property owner or appropriate public agency with site-specific advice on how best to remove it. Also, because Vochin knapweed is not established in King County, we have an opportunity to stop it from spreading if we act quickly. We map all known locations of regulated noxious weeds such as Vochin knapweed in order to help us and others locate new infestations in time to control them.

Report vochin knapweed in King County, Washington

• Please notify us through our online infestation form

Locate vochin knapweed in King County, Washington

• Use our interactive noxious weed map and search for vochin knapweed

Related information

• Agriculture in King County, Washington
• Northwest yard and garden
• Animals, plants and habitat

Related agencies

• Dept. of Natural Resources and Parks
• Water and Land Resources Division

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Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. To contact staff, see the Noxious Weed Control Program Directory, send an email, or call 206-477-WEED (206-477-9333).