St. Johnswort, Hypericum perforatum L.

Declared out of print July 2010. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalogSt. Johnswort (Hypericum\ud perforatum), also called\ud Klamath weed and\ud goatweed, was introduced from\ud Europe and was found in California\ud about 1900. It was a\ud major pasture weed west of the\ud Cascade mountains from\ud Tacoma south to central California\ud until the successful introduction\ud of the chrysolina beetle,\ud a leaf-eating insect