Weed List
2026 Lewis County Noxious Weed List and Appendix
The Lewis County Noxious Weed Control Board adopts the Noxious Weed List (and its appendix) at the first Weed Board meeting of each year, following the Washington State Weed Board's annual adoption of its list.
The county's list includes a number of Class A and B-Designate noxious weeds the county receives from the state, essentially as orders, that local landowners must control. The county's Weed Board may also select additional Class B & C weeds from the state list to adopt as local priorities for control and education efforts.
Lewis County Weed Control will use data from a variety of sources, including scientific studies, expert opinions, and reports from other county weed boards within Washington State, to identify the weeds that staff believe should be considered high priority, due to their likelihood of introduction and invasive potential, likely impacts on ecology and agriculture, etc. The Weed Board members will then make the final determination.
The Board welcomes input from the public regarding weed selection to the county weed list, please contact us for more information or to submit written testimony that will be delivered to the board members for consideration.
Please see below for the: