To help protect the state's resources, the Washington State Noxious Weed Control Board adopts a State Noxious Weed List each year. This list categorizes weeds into three major classes—A, B and C—according to the seriousness of the threat they pose to the state or a region of the state. Contact the State Weed Boardto participate in the weed listing process.

• Class A weeds are non-native species with a limited distribution in Washington. Preventing new infestations and eradicating existing infestations is the highest priority. Control of these species is required by law.
• Class B weeds are non-native species that are presently limited to portions of the state. Class B species are designated for control in regions where they are not yet widespread. Preventing infestations in these areas is a high priority. In regions where a Class B species is already abundant, control is decided at the local level, with containment as the primary goal.
• Class C weeds are other non-native weeds found in Washington. Many of these species are widespread in the state. Long-term programs of suppression and control are a local option, depending upon local threats and the feasibility of control in local areas.

A downloadable pdf version can be accessed by clicking here:

2008 Grays Harbor County Weed List

back to top

back to top

back to top

The Washington State Noxious Weed List is updated annually. Everyone is encouraged to participate in the process.

For additional information and timeline for the weed listing process, contact:
Washington State Noxious Weed Control Board
P.O. Box 42560
Olympia, WA 98504-2560

Alison Halpern, Executive Secretary (360) 902-2053
Education Specialist (360) 902-2082

You can find more information about Noxious Weeds from these web sites:

Washtington State Noxious Weed Control Board

Washington State Department of Ecology - Aquatic Plants