Herb Robert identification and control
Geranium robertianum, Geraniaceae Family
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
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).