Noxious Weeds in Snohomish County
2011: Classes and Status

Weed List: Class B Undesignated

Class B undesignated weeds are common in the county and are not designated by the State Weed Board to be controlled in that county, however the County has chosen to control these weeds and have included them on the County Weed List. Control in Snohomish County is required.

Common Name gorse hawkweed, orange hawkweed, smooth knotweed, bohemian knotweed, giant knotweed, Himalayan knotweed, Japanese loosestrife, purple ragwort, tansy watermilfoil, Eurasian	Scientific Name    Ulex europaeus  Hieracium aurantiacum  Hieracium laevigatum  Polygonum bohemicum  Polygonum sachalinense  Polygonum polystachyum  Polygonum cuspidatum  Lythrum salicaria  Senecio jacobaea  (click here for brochure)  Myriophyllum spicatum