Shortleaf pine, also known as shortleaf yellow, southern yellow, oldfield, shortstraw, or Arkansas soft pine, is one of the four most important commercial conifers in the southeastern United States. In Arkansas and Louisiana, shortleaf pine is the primary timber species. In Virginia, however, the acreage of shortleaf pine has steadily decreased since 1940 despite its adaptability to many different soil types and its value as a timber species.