Report from the California Exotic Pest Plant Council describes how prescribed burns can help to control the aggressive Eurasian weed.

Identification guide for this invasive plant includes photos. Find biological and ecological backgrounds for purple and Iberian starthistles.

Fact sheet on the prickly plant discusses its biology, habitat and effects. Find advice on chemical, biological and physical control measures.

Proposal to control this invasive plant avoids herbicides, burning, tilling, or hand pulling and emphasizes habitat restoration.

Description of the prolific invader's biology, distribution, environmental effects and control includes photographs and references.

Learn how the prickly Eurasian pest spread into North America, explore its ecological effects, and find out what's being done to control it.

Article from the San Francisco Chronicle details the costly effects caused by this nonnative weed.

California Exotic Pest Plant Council offers brief profiles of five insect species approved by the USDA for controlling the invasive plant.

Report describes the effectiveness of grazing, mowing and cultivation of competing plant species as methods of starthistle control.

Explore the life cycle of this exotic plant and learn what factors contribute to its success as an invader. Includes references.

Find profiles of herbicides which are effective against the invasive plant, and explore guidelines for their proper application.