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FS 50 April 1963 St. johnswort Scientific name : Hypericum, perforatum Common names : Klamathweed, goatweed Fo IS ht r m P U tp o :// s BL ex t c IC te ur A ns re TI io nt ON n. in or fo IS eg rm O on at U st ion T O at : F e. D ed A u/ TE ca . ta lo g By Martin Zimmerman, Sherman County Extension Agent, Oregon State University Perennial Flowers yellow to orange Leaves opposite Translucent dots in leaves Underground stems short Roots shallow TH St. Johnswort is a range perennial. It is often found along roads, in meadows, and trashy areas. Stems are slender, erect, and have much-branched tops. Usually it is not a pest in cropped areas. Control: St. Johnswort has been fairly difficult to control with 214-D. Repeated applications of 1 pound 2,4-D ester per acre are required for good control. Use 15 pounds Borascu per square rod for small patches. weed. Release of St. Johnswort beetles may be necessary for large areas of this See your county Extension agent for information. .00) "At', OEIGON STATE -MI' NIVIIISI This is one of a series of Fact Sheets reporting Cooperative Extension work in agriculture and home economics, F. E. Price, director. Printed and distributed in furtherance of Acts of Congress of May 8 and June 30, 1914. Oregon State University, Oregon counties, and U. S. Department of Agriculture cooperating.
