| Centaurea solstitialis (Yellow Starthistle): 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. |
| Centaurea solstitialis L. (Yellow Starthistle): The plant's origins and biology, current infestation levels in Washington, extensive list of print references. From the Washington State Noxious Weed Control Board. |
| Fact Sheet No. 1: Yellow Starthistle: 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. |
| Progress in Yellow Starthistle Biological Control: USDA site reports positive results on field tests using Eustenopus villosus weevils to control starthistle in Idaho. |
| Yellow Starthistle - UC Pest Management Guidelines: University of California guidelines for control of Yellow Starthistle, including identification and biology. |
| Yellow Starthistle Biology and Control: Origins, life cycle, photographs, and analysis of several means of controlling this pest. |
| Yellow Starthistle Information: 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. |
Classical
