Field bindweed identification and control
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. For more information, see Noxious weed lists and laws.
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 Washington State Weed List, but it is on the King County Weeds of Concern List due to its invasiveness, especially in urban green spaces, 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
- Washington State Noxious Weed Control Board (external link)
- Bindweed weed alert (199 KB Acrobat file).
- Colorado Department of Agriculture (external link)
- Invasive Species Council of British Columbia Photo Gallery
- University of California IPM
- North Dakota State University Extension
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.