skip to main content

To offer a suggestion or report an error on the King County Noxious Weeds Web site, please contact Sasha Shaw, education specialist.

King County, Washington noxious weed identification and control

Common tansy
Tanacetum vulgare

common tansy plantsOften mistaken for tansy ragwort, this Class C noxious weed is recommended but not required for control in King County.

Additional information on common tansy

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

Please notify us if you see common tansy 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. We map all known locations of regulated noxious weeds such as common tansy in order to help us and others locate new infestations in time to control them.

Common tansy photos - click on thumbnail for larger image

tansy comparison - click for larger image common tansy leaves - click for larger image common tansy flowers - click for larger image

Report common tansy in King County, Washington

Locate common tansy in King County, Washington

Related information

Related agencies


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.