State Designated Weeds

“Designated Noxious Weed” means the weeds, seeds or other plant parts are considered detrimental, destructive, injurious or poisonous and are on the designated list, which is formed by joint resolution of the Wyoming Board of Agriculture and the Wyoming Weed and Pest Council. If a plant is listed as a Designated Noxious Weed, that listing provides statewide legal authority to regulate and manage it.

Below are the weeds that are currently designated in the state of Wyoming. Click on each picture to learn more about the plant. If you need assistance with management of these weeds, please contact a CCWP representative.

Black Henbane
Black Henbane
Field Bindweed
Canada Thistle
Canada Thistle
Leafy Spurge
Perennial Sowthistle
Quackgrass
Hoary Cress (White Top)
Hoary Cress
Perennial Pepperweed (Giant Whitetop)
Perennial Pepperweed
Oxeye Daisy
Skeletonleaf Bursage
Russian Knapweed
Yellow Toadflax
Dalmatian Toadflax
Scotch Thistle
Musk Thistle
Musk Thistle
Common Burdock
Common Burdock
Plumeless Thistle
Dyers Woad
Dyers Woad
Houndstongue
Spotted Knapweed
Diffuse Knapweed
Purple Loosestrife
Common St. Johnswort
Salt Cedar (Tamarisk)
Common Tansy
Common Tansy
Russian Olive
Russian Olive