To offer a suggestion or report an error on the King County Noxious Weeds Web site, please contact Sasha Shaw, education specialist.
Musk Thistle Carduus nutans
This Class B noxious weed occurs in abundance in some parts Washington State and is rare in others. Musk thistle invades pastures, meadows, and fields, displacing native and/or beneficial forage species. As a Class B noxious weed, its control is required in King County.
For more information about musk thistle, please follow this link to the WA State Noxious Weed Control Board.
If you find musk thistle in King County, please notify us through our online infestation form.
To find out where we have records of this weed in King County, use our interactive noxious weed map and search for musk thistle.
Musk thistle photos - click thumbnail for larger image
Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. To contact a staff member at the King County Noxious Weed Control Program, please call 206-296-0290 or by reach them by email.
This Class B noxious weed occurs in abundance in some parts Washington State and is rare in others. Musk thistle invades pastures, meadows, and fields, displacing native and/or beneficial forage species. As a Class B noxious weed, its control is required in King County. 
for musk thistle.
