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Noxious Weeds

Noxious weeds are plants not native to Washington. Noxious weed species and the processes for regulation and control are defined in RCW 17.10. All state agencies are required to control noxious weeds on lands they own.

Noxious weed control is important because new invaders often appear first along highway corridors. Management of the right of way, because of its linear nature, can impact an enormous number of neighbors. WSDOT is a responsible steward of state owned land. It supports commerce and the economic viability of the agricultural community. The agency also values environmental preservation. To meet responsibilities it is necessary that noxious weeds be controlled. State law requires the control of certain weed species within highway rights of way. Activities required for control have to be given priority over all other vegetation management activities except those that directly and immediately affect the safety of the public.

Sometimes maintenance resources do not allow for full control of all noxious weed infestations within a given year. In these situations the area maintenance superintendent and the local county weed board will need to negotiate a multi-year strategy for regaining control.

Washington State Department of Agriculture Noxious Weed Control Board

If you have comments or questions, contact Ray Willard at (360) 705-7865, or email willarr@wsdot.wa.gov.


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