Utah's Noxious Weed List

Utah recently added 9 new weeds to the State Noxious Weed List and now has a total of 27 weeds listed on the noxious weed list. Additionally these weeds are prioritized into three levels: A, B, and C.

"Class A" weeds have a relatively low population size within the State and are of highest priority being an Early Detection Rapid Response (EDRR) weed.

"Class B" weeds have a moderate population throughout the State and generally are thought to be controllable in most areas.

"Class C" weeds are found extensively in the State and are thought to be beyond control. Statewide efforts would generally be towards containment of smaller infestations.

Each county in Utah may have different priorities regarding specific State designated Noxious Weeds and is therefore able to reprioritize these weeds as they see fit for their own needs.

Please note these links have multiple photos and may take several seconds to load for 56k modem users.

State Noxious Weeds Class A Weeds Black Henbane Diffuse Knapweed Johnsongrass Leafy Spurge Medusahead Oxeye Daisy Purple Loosestrife St. Johnswort Spotted Knapweed Sulfur Cinquefoil Yellow Starthistle Yellow Toadflax

State Noxious Weeds Class B Weeds Bermudagrass Dalmatian Toadflax Dyer's Woad Hoary Cress Musk Thistle Perennial Pepperweed Poison Hemlock Russian Knapweed Squarrose Knapweed Scotch Thistle Class C Weeds Canada Thistle Field Bindweed Houndstongue Quackgrass Saltcedar