Dense-flowered cordgrass identification and control
This Class A noxious weed was added to the State Noxious Weed List in 2003.
It has a very limited distribution in Washington State. It was discovered in the North Bay area of Grays Harbor and it was found at Race Lagoon, near Penn Cove on Whidbey Island. For more information on noxious weed regulations and definitions, see Noxious weed lists and laws.
Unlike other Spartina species, S. densiflora does not have rhizomes. Spread is by seed or by vegetative growth.
Additional information on dense-flowered cordgrass
What to do if you find this plant in King County, Washington
Please notify us if you see dense-flowered cordgrass growing in King County. Our program staff can provide the property owner or appropriate public agency with site-specific advice on how best to remove it. We map all known locations of regulated noxious weeds such as dense-flowered cordgrass in order to help us and others locate new infestations in time to control them.
Dense-flowered cordgrass photos
Report dense-flowered cordgrass in King County, Washington
- Please notify us through our online infestation form
Locate dense-flowered cordgrass in King County, Washington
- Use our interactive noxious weed map and search for dense-flowered cordgrass