This plant is a shrub-like perennial herb with bright yellow flowers. It is an invasive species native to Europe, western Asia and northern Africa. Colonists brought it to the United States, where it now grows widely.
The parts of the plant used in herbal remedies are taken from the flowering tops. St. John’s Wort has been shown to be effective in treating mild to moderate depression and causes fewer side effects than older types of antidepressants.
St. John’s Wort common name comes from its traditional flowering and harvesting on St John’s Day (June 24). The genus name Hypericum is derived from the Greek words hyper (above) and eikon (picture), in reference to the plant’s traditional use in warding off evil by hanging plants over a religious icon.
This plant is distinguished by its almost woody base, opposite leaves, bright yellow flowers and leaves with transparent dots. It produces flower clusters are at ends of branches with each flower measuring about an inch across.
St. John’s Wort is commonly found in dry, gravely soils, fields, pastures, abandoned fields and in other sunny locations throughout many parts of the world. I’ve seen it in Brecksville Reservation as well as at Canalway Visitor Center.