Ulmus rubra, or slippery elm, is native to eastern North America, ranging from southwestern Maine to southern Quebec, south to northernmost Florida, and west to eastern Texas. It is known for its large size, reaching heights of 40 to 60 feet and widths of 30 to 50 feet. It thrives in moist, well-drained clay or loamy soils and prefers full sun to partial shade. Unfortunately, like all native elms, Ulmus rubra is susceptible to Dutch Elm Disease. An alternative tree to plant is Ulmus hybrids or Ulmus americana.