To continue to address the genetic information needs of the Shortleaf Pine Initiative, Forest Service scientists completed a study looking at hybridity of shortleaf pine (Pinus echinata) orchard and nursery stocks across the southeastern U.S. Their study sampled both Forest Service and state agency facilities. They found none to limited amounts of first-generation (F1) hybrids with loblolly pine (Pinus taeda) in the orchards and nurseries; however, there was evidence for an appreciable amount of later-generation hybridity. This may reflect bias in selecting shortleaf pines with some hybrid character for initial orchard establishment. Their previous research showed that shortleaf-loblolly pine hybrids have many desirable (strong competitive) characteristics under fire-excluding conditions, but not when fire is frequent. Establishing and maintaining shortleaf pine with frequent fire will greatly reduce or even eliminate hybrids regenerating and developing into the overstory. In addition to this research, they surveyed the literature on shortleaf pine genetics and prepared a review that can be used to guide further research and restoration planning activities. The work will be invaluable to natural resource managers across the southeast.