Sour gum, Tupelo, Tupelo gum— Nyssa spp.
Family Nyssaceae (Tupelo family)
Sour gum is a pyramid-shaped deciduous tree with crooked branches. It has reddish bark and glossy, dark green leaves. Male and female flowers are inconspicuous and produced on separate plants. Bluish-black fruit will form on female trees if male trees are nearby. Fruit resembles small olives and attracts birds. Leaves turn yellow, orange, or red before they drop in fall.
Optimum conditions for growth
Sour gums make good shade trees. They do best in areas with full sun or partial shade. Plant in deep, acidic soil. Trees prefer moderate to regular amounts of water and well-drained soil but can tolerate poor-drained areas and some drought.
Leaves of sour gum