The State of Utah recently updated its noxious weed list. As of 2016, Utah lists a total of 54 weeds on the noxious weed list. Additionally these weeds have been newly classified into the following five categories:
1A = Not known to exist in Utah. Significant risk of invasion.
1B = Limited distribution in Utah. EDRR (Former A Class)
2 = Widely distributed in Utah, considered controllable (Former B Class)
3 = Widely distributed in Utah, considered beyond control, control expansion (Former C Class)
4 = Present in Utah. Prevent distribution through Seed law
Each county in Utah may have different priorities regarding specific State designated Noxious Weeds and therefore may reprioritize these weeds as they see fit for their own needs.
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|African rue||Common crupina||Malta starthistle||Mediterranean sage|
|Plumeless thistle||Small bugloss||Spring millet||Syrian beancaper|
|African Mustard||Blueweed (Vipers bugloss)||Common St. Johnswort||Camelthorn|
|Cutleaf vipergrass||Elongated mustard||Garlic mustard||Giant reed|
|Goatsrue||Japanese knotweed||Oxeye Daisy||Purple starthistle|
|Black Henbane||Diffuse Knapweed||Dalmatian Toadflax||Dyer's Woad|
|Leafy Spurge||Medusahead||Purple Loosestrife||Rush skeletonweed|
|Spotted Knapweed||Squarrose Knapweed||Yellow Starthistle||Yellow Toadflax|
|Bermudagrass||Canada Thistle||Field Bindweed||Hoary Cress|
|Houndstongue||Jointed goatgrass||Musk Thistle||Perennial Pepperweed|
|Perennial sorghum ssp. (Johnsongrass)||Phragmites (Common reed)||Poison Hemlock||Puncturevine (Goathead)|
|Quackgrass||Russian Knapweed||Scotch Thistle||Saltcedar|
|Cogongrass (Japanese blood grass)||Dame's rocket||Myrtle spurge||Russian-olive|