Wyoming Weed & Pest Control Act Designated Weed List

"Designated Noxious Weed" means the weeds, seeds or other plant parts that are considered detrimental, destructive, injurious or poisonous, either by virtue of their direct effect or as carriers of diseases or parasites that exist within this state, 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.

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  Common Name Scientific Name
BlackHenbane Black Henbane Hycoscyamus niger L.
Canada-Thistle Canada thistle Cirsium arvense L.
Common burdock 150x150 Common burdock Arctium minus (Hill) Bernh.
Common St Johnswort 150x150 Common St. Johnswort Hypericum perforatum L.
Common Tansy 150x150 Common Tansy Tanacetum vulgare
Dalmation 150 Dalmatian toadflax Linaria dalmatica (L.) Mill.
Diffuse 150 Diffuse knapweed Centaurea diffusa Lam.
Dyers woad 150 Dyer's woad Isatis tinctoria L.
Field bindweed 150 Field bindweed Convolvulus arvensis L.
Hoary cress 150 Hoary cress (whitetop) Cardaria draba & Cardaria pubescens (L.) Desv.
Houndstongue 150 Houndstongue Cynoglossum officinale L.
Leafy Spurge 150
Leafy spurge Euphorbia esula L.
Musk thistle 150 Musk thistle Carduus nutans L.
Oxeye daisy 150 Oxeye daisy Leucanthemum vulgare Lam.
Perennial pepperweed 150 Perennial pepperweed (giant whitetop) Lepidium latifolium L.
Perennial sowthistle 150
Perennial sowthistle Sonchus arvensis L.
Plumeless Thistle 150 Plumeless thistle Carduus acanthoides L.
Purple loosestrife 150 Purple loosestrife Lythrum salicaria L.
Quackgrass 5 Quackgrass Elymus repens (L.) Gould.
Russian knapweed 150 Russian knapweed Acroptilon repens L.
Russian olive 150 Russian olive Elaeagnus angustifolia L.
Salt cedar 150 Saltcedar Tamarix spp.
Scotch thistle 150
Scotch thistle Onopordum acanthium L.
SkeletonLeaf 150 Skeletonleaf bursage Ambrosia tomentosa Nutt.
Spotted knapweed 150 Spotted knapweed Centaurea stoebe L. ssp. micranthos (Gugler) Hayek
Yellow toadflax 150
Yellow toadflax Linaria vulgaris (P.) Mill