woolly locoweed

Woolly locoweed, scientifically known as Astragalus mollissimus, is a species of poisonous plant native to the western United States. It belongs to the pea family, Fabaceae.12

This perennial herb is characterized by its woolly leaves and dense spikes of violet-purple flowers. Woolly locoweed can be dangerous to livestock, including cattle and horses, if ingested. The toxins within the plant can cause frenzied behavior, impaired vision, and even death in grazing animals. However, livestock typically avoid eating it unless other forage is scarce. The plant's toxicity can be influenced by soil conditions, and decaying locoweed can release toxins that may be absorbed by other forage crops.12