Epimedium, also known as bishop's hat or barrenwort, are long-lived perennials that deserve to be used more widely. Low-growing foliage of great distinction and delicate spring flowers make epimediums a good garden choice. Flowers sometimes bloom before plants leaf out, in soft colors ofwhite, yellow, rose, and lavender. The foliage makes a trim ground-cover layer. The leaves, somewhat heart-shaped on wiry stems, may be green, purple, or green with red or purple flushes or veining.