Return with us to the days of yesteryear. All us old western fans knew about locoweeds. They cause locoism, which according to Wiki, includes "depression, blindness, loss of coordination, emaciation, tremors, paralysis, constipation, deterioration of the coat, decreased libido, abortion, seizures, and death. Cattle that have access to it can become adicted. These inch high flowers are their favorite part. White locoweed grows in CO, ID, KS, MT, NE, NM, NV, OK, OR, SD, TX, UT, and WY. Lake Co CO, 6/20/13.