University of California

Integrated strategies offer site-specific control of yellow starthistle


Joseph M. DiTomaso
Steven F. Enloe
Guy B. Kyser
Steve B. Orloff

Authors Affiliations

J.M. DiTomaso is Noncrop Extension Weed Ecologist, Department of Vegetable Crops, all of UC Davis. S.B. Orloff is Farm Advisor, Siskiyou County; S.F. Enloe is graduate student, Department of Vegetable Crops, all of UC Davis; G.B. Kyser is StaffResearch Associate; S.B. Orloff is Farm Advisor, Siskiyou County.

Publication Information

Hilgardia 54(6):30-36. DOI:10.3733/ca.v054n06p30. November 2000.

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Ongoing research projects integrate chemical, mechanical, cultural and biological techniques to control yellow starthistle, a prolific weed now infesting between 10 million and 15 million acres in California. With many options available to land managers, developing a long-term, strategic management plan most suitable to a specific area can be complicated. It requires careful consideration of the advantages and disadvantages of each option and how best to incorporate appropriate ones into an effective program. Management strategies include timely mowings, grazing, clover plantings, biological control insects, prescribed burning and selective applications of herbicides. In addition to new developments in the management of yellow starthistle, public awareness of invasive weed issues has translated into major legislative changes that should encourage and assist private and public landowners and managers to initiate long-term programs to prevent and manage invasive weeds, particularly yellow starthistle.


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DiTomaso J, Enloe S, Kyser G, Orloff S. 2000. Integrated strategies offer site-specific control of yellow starthistle. Hilgardia 54(6):30-36. DOI:10.3733/ca.v054n06p30
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