Barrenworts (Epimedium spp.) are a  collection of ground cover species mostly from Asia and Europe. None are native to North America, but most thrive in gardens in the Southern Appalachian region (USDA zones 6 and 7). There are currently 21 known species worldwide. Also called Bishop’s hat, barrenworts are one of our finest groundcovers for part sun to part shade areas. Some are […]