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Utah: invasive & noxious plant laws
New laws coming: several states phase in plant bans 2027–2030. See dates and sources →
Utah's Noxious Weed Act (Utah Code title 4 ch. 17) and rule R68-9 (last amended June 28, 2024) set five classes of state noxious weeds. Landowners must control them, and counties may reprioritize them. Class 4 plants are designated as prohibited for sale or propagation in the nursery and greenhouse trade. Classes 1A through 3 are control and containment categories.
Official sources
Class 1A EDRR watch list (Utah Admin. Code R68-9-3), control list — not a sale ban (6)
| Scientific name | Common name / notes |
|---|
| Crupina vulgaris | common crupina |
| Salvia aethiopis | Mediterranean sage |
| Carduus acanthoides | plumeless thistle |
| Anchusa arvensis | small bugloss |
| Milium vernale | spring millet |
| Zygophyllum fabago | Syrian bean caper |
Class 1B EDRR (R68-9-3), control list — not a sale ban (17)
| Scientific name | Common name / notes |
|---|
| Brassica tournefortii | African mustard |
| Peganum harmala | African rue |
| Echium vulgare | blueweed |
| Alhagi maurorum | camelthorn |
| Hypericum perforatum | common St. Johnswort |
| Scorzonera laciniata | cutleaf vipergrass |
| Brassica elongata | elongated mustard |
| Myriophyllum spicatum | Eurasian watermilfoil |
| Alliaria petiolata | garlic mustard |
| Arundo donax | giant reed |
| Galega officinalis | goat's rue |
| Polygonum cuspidatum | Japanese knotweed |
| Centaurea melitensis | Malta starthistle |
| Leucanthemum vulgare | oxeye daisy |
| Myriophyllum aquaticum | parrot feather |
| Centaurea calcitrapa | purple starthistle |
| Ventenata dubia | ventenata |
Class 2 control (R68-9-3), control list — not a sale ban (12)
| Scientific name | Common name / notes |
|---|
| Hyoscyamus niger | black henbane |
| Linaria dalmatica | Dalmatian toadflax |
| Centaurea diffusa | diffuse knapweed |
| Isatis tinctoria | dyer's woad |
| Euphorbia esula | leafy spurge |
| Taeniatherum caput-medusae | medusahead |
| Lythrum salicaria | purple loosestrife |
| Chondrilla juncea | rush skeletonweed |
| Centaurea stoebe | spotted knapweed |
| Centaurea virgata | squarrose knapweed |
| Centaurea solstitialis | yellow starthistle |
| Linaria vulgaris | yellow toadflax |
Class 3 containment (R68-9-3), control list — not a sale ban (19)
| Scientific name | Common name / notes |
|---|
| Cynodon dactylon | Bermudagrass — not noxious in Washington County; triploid hybrid Bermudagrass is not noxious |
| Cirsium arvense | Canada thistle |
| Convolvulus spp. | field bindweed, wild morning-glory |
| Lepidium draba | hoary cress |
| Lepidium chalepense | hoary cress |
| Lepidium appelianum | hoary cress |
| Cynoglossum officinale | houndstongue |
| Aegilops cylindrica | jointed goatgrass |
| Carduus nutans | musk thistle |
| Lepidium latifolium | perennial pepperweed |
| Sorghum halepense | Johnson grass |
| Sorghum almum | Columbus grass |
| Phragmites australis | common reed |
| Conium maculatum | poison hemlock |
| Tribulus terrestris | puncturevine |
| Elymus repens | quackgrass |
| Acroptilon repens | Russian knapweed |
| Onopordum acanthium | Scotch thistle |
| Tamarix ramosissima | tamarisk, saltcedar |
Class 4 prohibited (R68-9-3) — prohibited for sale or propagation (5)
| Scientific name | Common name / notes |
|---|
| Imperata cylindrica | cogongrass, Japanese blood grass |
| Hesperis matronalis | dame's rocket |
| Euphorbia myrsinites | myrtle spurge |
| Elaeagnus angustifolia | Russian olive |
| Cytisus scoparius | Scotch broom |
Check plants against Utah law →
Informational only, not legal advice. Lists change; always check the official source linked above before you buy, sell, plant or move a plant. Lists checked 2026-10-14.
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