University of California

Seed weevil released to control milk thistle


R. B. Hawkes
L. A. Andres
P. H. Dunn

Authors Affiliations

R. B. Hawkes, University of California, Berkeley; L. A. Andres are Research Entomologists, U. S. Department of Agriculture, Agricultural Research Service, Albany, California, and Associates in the Agricultural Experiment Station, University of California, Berkeley; P. H. Dunn is Research Entomologist, USDA, ARS, Rome, Italy.

Publication Information

Hilgardia 26(12):14-14. DOI:10.3733/ca.v026n12p14. December 1972.

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Milk thistle, Silybum marianum (L.) Gaertn., is a widespread weed of increasing importance on range-land, ditch banks, highway and railroad right-of-ways, and wasteland in California. Although reported to be a biennial, it grows mainly as a winter annual, generally invading disturbed and overgrazed land. The plant reproduces only by seed.

Hawkes R, Andres L, Dunn P. 1972. Seed weevil released to control milk thistle. Hilgardia 26(12):14-14. DOI:10.3733/ca.v026n12p14
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