Origins, life cycle, photographs, and analysis of several means of controlling this pest.
Photographs and information about the origins of the plant and the problems it causes. Analysis of several control measures. From University of California Cooperative Extension.
Extensive site provides detailed information about the weed, including origins, impacts, biology, management options, associated legislation and references. From the UC Davis Weed Research and Information Center.
University of California guidelines for control of Yellow Starthistle, including identification and biology.
USDA site reports positive results on field tests using Eustenopus villosus weevils to control starthistle in Idaho.
Stewardship document provides history of the plants' migration from Eurasia to the Americas, biological description, associated ecological problems, management tactics, extensive bibliography and several detailed photographs. From The Nature Conservancy.
The plant's origins and biology, current infestation levels in Washington, extensive list of print references. From the Washington State Noxious Weed Control Board.