**Control of Bohemian, Japanese, giant and Himalayan knotweed is required on the Green River and its tributaries (defined as Type S, F or N aquatic areas in KCC 21A.24.355) upstream of the Auburn City Limits, including but not limited to Newaukum Creek, Soos Creek, Big Soos Creek, Jenkins Creek, Covington Creek, and Crisp Creek. Control of these invasive knotweed species is required up to the ordinary high water mark (or up to the top of the bank if the ordinary high water mark cannot be identified) and in the adjacent buffer area as specified in KCC 21A.24.358.
King County Weeds of Concern, 2009 List (This list is for educational purposes only; these species are not classified as noxious weeds in Washington State. These species often impact and degrade native plant and animal habitat. Control is recommended where possible and new plantings are discouraged.)
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.
