Prunus umbellata, called flatwoods plum, hog plum and sloe plum, is a plum species native to the United States from Virginia, south to Florida, and west to Texas.[3][4]
Prunus umbellata can reach 6.1 meters (20 feet) in height with a 4.6 m (15 ft) spread. It has alternate serrate green leaves that turn yellow in autumn. Flowers are white, creamy, or grayish. Fruits are round, purple, and 1.3–2.5 centimeters (1⁄2–1 inch) in diameter.[4] The trees bloom and bear fruit later than other plums. The fruits mature August–October. Large crops appear only every 3–4 years.[5]
P. umbellata trees can live up to 40 years and are very difficult to distinguish from P. angustifolia, with which it hybridizes easily.[6]