This review summarizes information that was available in the scientific literature as of 2020 on the biology, ecology, and effects of fire and control methods on yellow starthistle in North America.
Yellow starthistle is a nonnative, invasive forb in parts of the western United States. It can occur in dense monocultures that displace native plants; decrease native plant and animal diversity; reduce native wildlife habitat and forage; and alter water cycles, soil microbial community composition, and soil nutrient availability. It is most invasive in annual and perennial grasslands, shrub steppes, oak savannas, open woodlands, and openings in forests. It is especially invasive after disturbance, so limiting disturbance may help prevent yellow starthistle invasion.