plant: St. Johnswort, also known as klamath
weed, has a long history of herbal use. Recent research has suggested
that it may be a valuable remedy for problems with nervousness.
It is also used to treat a range of health problems from bladder
trouble to cuts and bruises.
weed: As a weed, St. Johnswort
has dominated rangelands in Oregon, Washington, Idaho, and California.
It is an aggressive competitor and forces out desirable wildlife
and livestock forage plants. In some cases, this plant can be toxic
to the animals that feed upon it.