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NOTE: In accordance with Governor Inslee’s Stay Home, Stay Healthy order, King County Noxious Weed Program staff are currently working from home except in very limited circumstances to carry out essential work as described in the Governor’s order. Because of this, we may be delayed in responding to noxious weed reports or following up on existing infestations. Please be assured that we will do our best to respond when we can do so safely. Noxious weed program staff are available to help through phone and email.

The best thing you can do right now about COVID-19 is to stay informed! Visit to learn more about the virus and how to prevent its spread. Keep updated on the latest developments on the Public Health – Seattle & King County blog at

Click on "Report-a-Weed" image to open form in a new window to report a noxious weed location in King County, Washington.

Click here to open form to report a weed in King County, Washington

Download King County Connect to report noxious weeds on your phone.

If the weed is on the list of state regulated noxious weeds for King County, we will visit the site and follow up with the property owner or agency responsible for the area. We will help make sure the weeds are controlled. Even for weeds for which control is not required, is it still helpful for us to know where they are. It helps us learn more about where it is having an impact in King County. To learn more about the Washington State Noxious Weed Law, see our web page on Lists and Laws.

If you have any questions, please contact our office by email at or by phone at 206-477-WEED (206-477-9333), or visit our home page for more resources.

Thank you for helping us locate noxious weeds.

Related information

Related agencies

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).