Noxious Weed Fact Sheets Program Contact: Sarah Bergquist, Interim Director (360) 639-6062 • sarah.bergquist@wsu.edu Butterfly Bush English Ivy Hairy Willowherb Knotweed Poison Hemlock Purple Loosestrife Spurge Laurel Sulfur Cinquefoil Tansy Ragwort Yellow Archangel
