Prunus apricots, of cherries, and of plums, all of which have cultivars developed for commercial fruit and nut production. The almond is not a true nut, the edible part is the seed. Other species are occasionally cultivated or used for their seed and fruit. A number of species, hybrids, and cultivars are grown as ornamental plants, usually for their profusion of flowers, sometimes for ornamental foliage and shape, and occasionally for their bark. The Tree of 40 Fruit has forty varieties grafted on to one rootstock. Species such as blackthorn ("Prunus spinosa"), are grown for hedging, game cover, and other utilitarian
Prunus pensylvanica Prunus pensylvanica Prunus pensylvanica, also known as bird cherry, fire cherry, pin cherry, and red cherry, is a North American cherry species in the genus "Prunus". "Prunus pensylvanica", grows as a shrub or small tree, usually with a straight trunk and a narrow, round-topped crown. It grows tall and in diameter. Trees up to tall have been found growing in the southern Appalachians, with the largest found on the western slopes of the Great Smoky Mountains. Its foliage is thin, with leaves long and wide. Flowers occur in small groupings of five to seven with individual flowers across. The fruit