Also known as Scare Devil, St. John's Wort is a yellow-flowering herb originating in Europe, which has been introduced to the Americas and grows wild in many meadows. The common name comes from its traditional flowering and harvesting on St. John's day, June 24th. The genus name Hypericum is derived from the Greek words hyper (above) and eikon (picture), in reference to the traditional use of the plant to ward off evil, by hanging plants over a picture in the house during St John's day. The species name perforatum refers to the presence of small oil glands in the leaves that look like windows, which can be seen when they are held against the light. When flowers or seed pods are crushed, a reddish/purple liquid is produced. Grows into a plant with lovely yellow flowers.