Fraxinus pennsylvanica, also known as Green Ash or Red Ash, is a medium-sized deciduous tree native to eastern and central North America. Its bark is smooth and gray on young trees and becomes thick and fissured with age. The leaves are green both above and below, and in autumn, they turn golden-yellow. Green Ash is one of the most widely planted ornamental trees throughout the United States and much of Canada, including in western areas where it is not native. The wood is hard, heavy, rather strong, tough, elastic, brittle, and coarse-grained, making it useful for tool handles, furniture, and other applications. A fairly wind-resistant tree, it can be grown as part of a shelterbelt planting. Green Ash is popular due to its good form and resistance to disease, and it is tolerant of harsh urban environmental conditions. It is also a native keystone species in eastern North America, providing important habitats and food for various wildlife. Its commercial supply is mostly in the South, and it is similar in properties to white ash wood.