|Large shrub or small tree with profuse apple-like white blossoms turning to ½ " long black fruits appreciated by birds in fall and winter. Thorny branches. Bushy growth to about 20 ft. tall but can be pruned to a shrub-sized hedge. Black Hawthorn trees are North American natives and most common in the Pacific Northwest. Also known as Douglas' Thornapple after explorer David Douglas. Zone 5-9.