The event will occur in person and online via zoom. Register at https://extension.wsu.edu/invasive-species/knotweed February 18, 2026 9:00am-3:30pm In Person Participation: DF Allmendinger Center, WSU Puyallup Research and Extension Center 2606 West Pioneer, Puyallup WA 98371 Doors open at 8:30am. Meeting starts at 9:00am. Park anywhere on campus. The Allmendinger Center is on the South side […]