Technical Abstract: Broom snakeweed is a native weed that is widely distributed on rangelands of western North America. Following disturbance from overgrazing, fire or drought, it can increase to form near monocultures. Dense snakeweed stands suppresses desirable forage production, but it is also toxic, and can cause abortions in livestock. This paper reviews broom snakeweed toxicology, and compiles recent information on its seed ecology, population cycles, control and management. Snakeweed germinates from seed that are partially buried near the soil surface and the soil surface must remain saturated for several days. Disturbance from fire or grazing reduces competition from other plants, allowing large expanses of even-aged stands to establish and dominate plant communities. Snakeweed can be controlled by prescribed burning and herbicides. However, a weed-resistant plant community should be established to prevent or minimize its reinvasion. Managing to maintain the dominant competitive grasses in the respective plant communities can prevent snakeweed dominance.