common St. Johnswort, St. John's wort, Klamath weed
rangeland, disturbed/waste areas
Regions likely to be Impacted:
Present in Neighboring States?
AR, CO, KS, LA, MO, NM, TX
Currently known from Oklahoma?
Steve Dewey, Utah State University, Bugwood.org
What you should know!
Crowds out native species. Toxic to livestock. has been shown to cause hyper photosensitivity. A seed or hay contaminant. Used medicinally.