Chir pine, also known as Indian Longleaf pine, is common to the most southern U.S. forests, although it is native to the Himalayas, where it is widely used for lumber. Needles of Pinus roxburghii are long and deciduous during dry seasons, but they usually remain on the tree for the better part of the year. Evergreen and coniferous, the trunk can grow to six feet (1.8 m.) around. Using chir pine in landscapes is normal too, but you should allow plenty of room for the specimen, which can reach 150 feet (46 m.) at maturity. However, the tree more commonly reaches 60- 80 feet (18-24 m.), still needing a good deal of space. It grows to a 30- to 40-foot (9-12 m.) spread, too. Cones on mature trees grow in dense clusters.