Plum Prunus DomesticaPlum fruit plants belong to the Prunus genus, and the most common species is known scientifically as Prunus domestica. Plums are deciduous fruit trees that produce the sweet and juicy plum fruit. They are members of the Rosaceae family and are native to Europe, Asia, and North America. Plums are now grown in many temperate regions around the world, and there are numerous cultivars with varying colors, flavors, and sizes.