State Designated Noxious Weeds
W.S. 11-5-102 (xi)
"Designated noxious weed" means plant species having seeds or other plant parts determined to be detrimental to the general health or welfare of the state based upon the following:
(A) Has demonstrated the ability to aggressively invade native plant communities and agricultural crops;
(B) Is injurious or poisonous to livestock;
(C) Is a carrier of disease or parasites;
(D) Can, by virtue of either direct or indirect effect, negatively impact management of agricultural or natural ecosystems.
Tall whitetop, giant whiteweed, perennial peppergrass, slender perennial peppercress, broadleaf or broadleaved pepperweed and ironweed.
Corn sow thistle, creeping sow thistle, field milk thistle, field sow thistle, and hare’s lettuce
St. John's-wort, Common St. John's-wort, Klamath weeds, tipton weed, perforate St John's-wort,
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Flannel leaf, feltwort, woolly mullein, velvetplant, velvet dock, flannelplant, big taper
Wild snapdragon, common toadflax, ramsted, flaxweed, Jacob’s ladder, Butter and eggs r
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