This Class A noxious weed is found in several counties in Washington State including Skagit and Snohomish County. It has been found on Vashon Island in King County but that population appears to have been eradicated. Control is required in King County.

For more information about common cordgrass, please please see the written findings of the WA State Noxious Weed Control Board or this to the WSDA spartina report.

If you find common cordgrass 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 common cordgrass.

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.