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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

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King County weeds of concern, 2012 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.)

Common name Scientific name
bittersweet nightshade Solanum dulcamara
buttercup, creeping Ranunculus repens
buttercup, tall Ranunculus acris
common hawthorn Crataegus monogyna
English holly Ilex aquifolium
English laurel Prunus laurocerasus
European mountain-ash Sorbus aucuparia
hedge bindweed, morning glory Calystegia sepium
multiflora rose Rosa multiflora
spotted jewelweed Impatiens capensis

King County Noxious Weed List

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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.