The park is dominated by loblolly pine and shortleaf pine trees. Conifers are also abundant, including shortleaf pine, loblolly pine. Loblolly pine seeds were carried aboard the Apollo 14 flight. Slash Pine generally contains a higher concentration of resin acids than Loblolly Pine. The tree species was a native loblolly pine. Loblolly pine has been planted in several areas. It frequently hybridizes naturally with loblolly pine and pitch pine where their ranges intersect. The most common evergreens are the shortleaf pine and the loblolly pine. Loblolly pine became the first species with its complete genome sequenced. Loblolly pine can reach a height of with a diameter of . The loblolly pine harbors an average load of at least eight lethal equivalents. However, Jack and Loblolly pine, Sugi cedar, and Hinoki cypress trees were able to survive. The most common type of tree in the southwest Piney Woods is the loblolly pine. Commonly cultivated trees include loblolly pine, longleaf pine, cherrybark oak, and cottonwood.