Weed management starts with proper identification

  • Noxious weed, Poisonous plant, Obnoxious weed, Nuisance weed; What is it?

Weed Identification


Provide us with a good representative sample of the weed you are concerned about. Samples that include flowers or fruit are essential for positive identification. Drop the sample off at the weed office or email us a photo. From there we will begin the process to provide you with more information and resources about the plant of concern.

Poisonous Plants

Give us a call right away! Have the plant in question on hand to help with the identification. Providing a plant sample and/or arranging for a site visit will likely be needed for confirmation.
Washington Poison Center (WPC) is a statewide provider of immediate, free and expert treatment advice and assistance on the telephone in the case of exposure to poisonous, hazardous or toxic substances. (800) 222-1222.

Photos, description & searchable index of noxious weeds (Washington St. Weed Board)

Photos, description & searchable index of noxious weeds (King Co. Weed Program)

Plants Database with extensive searchable list of plants (USDA-NRCS)

Plants Poisonous to Livestock (Cornell University)