All plant parts are toxic. Locoweed is found on foothills and semiarid regions. Locoweed flowers resemble sweet peas. Blossoms may be blue, purple, yellow, or white. Where and When It Grows Locoweeds are commonly found on mountains, foothills, and plains and in semiarid desert regions.
Growth starts in late fall, winter, or early spring, depending on locality, species, and moisture.
Woolly loco is found from southwestern South Dakota south to Texas and New Mexico. White point loco grows from Montana, Idaho, and North Dakota south to Arizona, New Mexico, and Texas. Spotted loco grows from British Columbia to Mexico, and east to Colorado. Wooton loco grows in eastern Arizona, as well as in the same areas as Bigbend loco. Locoweeds are prolific seed producers and the seeds may remain viable in the soil 50 years or more.