Extension > Invasive Species > 2026 Washington State Knotweed Summit 2026 Washington State Knotweed Summit View Agenda (PDF) WSDA Cooperative Knotweed Control Program Jonathan Still, Washington State Department of Agriculture Recorded on February 18, 2026 Drones for Weed Management Daniel Zimmerman, Washington Department of Fish and Wildlife Recorded on February 18, 2026 Knotweed… Now What?? Justin Brooks, King County Noxious Weed Control Program Recorded on February 18, 2026 Lessons Learned – 25 Years of Knotweed on the Hoh River Jill Silver, 10,000 Years Institute Recorded on February 18, 2026 Knotweed Biocontrol Efforts in Washington State Jennifer Andreas, Washington State University Recorded on February 18, 2026 Knotweed eradication Progress in the Sauk and Skagit Watersheds Scott Morris, Sauk-Suiattle Indian Tribe Recorded on February 18, 2026 Snoqualmie Indian Tribe Environmental and Natural Resources Department – Noxious Weed Management Michael Bailey, Snoqualmie Indian Tribe Environmental and Natural Resources Department Recorded on February 18, 2026 Invasive Plant Mapping and Control in the Stillaguamish Basin with a Focus on Knotweed Scott Morris, Sauk-Suiattle Indian Tribe Recorded on February 18, 2026 Feedback Please share feedback to help improve this program and related events Name (optional) First Last Email (optional) What topic are you providing feedback for? Please indicate if your feedback is related to a workshop, webinar, design, webpage, general programming, or other. FeedbackPlease use this space to share feedback Δ