The most widely distributed of North American Ash, it is naturally found in swampy woods or on stream banks. Relatively free from insects and disease, and will grow in difficult conditions. Used in revegetation of strip mining areas. Leaves have 5 to 7 stalked leaflets. Many cultivars are available for landscape uses. The Emerald Ash Borer has been found in Indiana! This insect, accidentally introduced from Asia, is lethal to all native Ash species, and the potential for destruction of native Ash trees rivals that of Dutch Elm Disease on American Elm.