September 12, 2026 - 10 AM
Knotweed Workshop
Join the Columbia Soil and Water Conservation District and Scappoose Bay Watershed Council for a free workshop focused on Japanese knotweed and other high-priority invasive weeds found in Columbia County.
Participants will learn how to identify Japanese knotweed at various stages of growth, explore best practices for management and removal, and learn about other invasive weeds to watch for in our area.
Saturday, September 12, 2026
Doors open at 9:30 a.m.
Workshop: 10:00 a.m. to 12:00 p.m.
Columbia SWCD Office
35285 Millard Road
St. Helens, OR 97051
Breakfast will be provided!
Space is limited, so advance registration is required.