Noxious Weed Board

The Lewis County Noxious Weed Control Board will hold its regular quarterly meeting on August 5th, 2026, at 10 AM in the Community Development Hearing Room at 125 NW Chehalis Ave., Chehalis, WA 98532. The agenda for this meeting is available here.

It's that time! Tansy ragwort season is upon us, and all Lewis County residents are called to do their part in controlling the county's most infamous weed.

Tansy ragwort is a very problematic and toxic agricultural weed here in our county. Even if you don't have a large piece of land or raise animals yourself, allowing this weed to seed could contribute more than 250,000 seeds to neighboring properties (and that's just one tansy ragwort plant; imagine if you have a yard full of them)!

If you see this weed on your property, pull it. If you see this weed on your neighbor's property, let them know and maybe offer to help them pull it.

Mowing is NOT an effective control option! Even after the flower head has been cut off, seed development will often continue.

Of course, there are other options for much more effective control. Please reach out to us if you are feeling overwhelmed by your tansy. We can make site-specific recommendations aligned with your management goals to help you get the most out of your land.

It takes all of us to keep our county beautiful and tansy-free. Thanks for your help. Now, let the tansy pulling continue!