Legal status in King County, Washington
Field bindweed is a Class C noxious weed on the Washington State Noxious Weed List, first listed before 1988. In King County, it is on the non-regulated noxious weed list. Property owners are not required to control this species.
Hedge bindweed (Convolvulus sepium or Calystegia sepium), also known as morning glory, is a closely related and widespread invasive species. Hedge bindweed is not on the Washinton State Weed List, but it is on the King County Weeds of Concern List due to its invasiveness, especially in urban greenspaces, gardens and backyards. It can also be a pest in berry fields and other crops, but it is more common along hedgerows and fences. For photos and distribution information for hedge bindweed, please see the UW Burke Museum website.
Additional information on field bindweed
What to do if you find this plant in King County, Washington
Because field bindweed is so widespread, property owners in King County are not required to control it and we are not generally tracking infestations. We can provide advice on how to control field bindweed, but there is generally no legal requirement to do so.