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To offer a suggestion or report an error on the King County Noxious Weeds Web site, please contact Sasha Shaw, education specialist.
King County, Washington noxious weed identification and control

Lawnweed
Solvia sessilis

lawnweed - carpet burweed (Soliva sessilis) - click for larger imageLawnweed (also known as carpet burweed) is a Class B non-designate noxious weed in King County, Washington. It is recommended for control where possible but not required.

This low-growing plant is difficult to identify because of its small size. It is more often located by the sharp burs that form after flowering. Lawnweed is mostly a problem in high traffic areas of turf where disturbance, compaction and short-mowed grass allows it to spread. Lawnweed can be controlled with good turf management practices such as fertilizing, regular watering, aerating and overseeding as needed.

Lawnweed/Carpet Burweed (Soliva sessilis) Photos - click for larger image

Lawnweed (Carpet burweed) - click for larger image Lawnweed (Carpet burweed) patch - click for larger image Lawnweed (Carpet burweed) large patch - click for larger image Lawnweed (Carpet burweed) in turf - click for larger image Lawnweed (Carpet burweed) in turf at UW campus - click for larger image

Please visit the Washington State Noxious Weed Control Board for more information about lawnweed (external link).

If you find lawnweed in King County, please notify us through our online infestation form.

To find out where we have records of this weed in King County, use our interactive noxious weed map and search Arc IMS Search Tool for lawnweed.

Report lawnweed in King County, Washington

Locate lawnweed in King County, Washington

Related information

Related agencies

Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. To contact a staff member at the King County Noxious Weed Control Program, please call 206-296-0290 or by reach them by email.