Herb Robert escaped from ornamental plantings and thrives in forested communities as the dominant ground cover, displacing native and beneficial plants.

Herb Robert's 5-petaled flowers are in all shades of pink and sometimes white. Overall the plant is covered with short glandular hairs, giving the plant a sticky feel and a distinct odor (sometimes this plant is known as "stinky Bob"). Shallow, weak roots make this plant easy to pull although large infestations can be highly labor-intensive to remove.

Legal status in King County, Washington

This non-regulated Class B noxious weed is widespread in western Washington. Control is recommended, but not required in King County. For more information, see Noxious weed lists and laws.

Additional information on herb Robert

• Washington State Noxious Weed Control Board (external link)
• Herb Robert Weed Alert
• Herb Robert Best Management Practices

Herb Robert photos - click thumbnail for larger image

Related information

• Agriculture in King County, Washington
• Northwest yard and garden
• Animals, plants and habitat

Related agencies

• Dept. of Natural Resources and Parks
• Water and Land Resources Division

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Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. To contact staff, see the Noxious Weed Control Program Directory, send an email, or call 206-477-WEED (206-477-9333).