Crataegus uniflora aka Dwarf Hawthorn

Crataegus uniflora, or dwarf hawthorn, belongs to the rose family. It is native to the southeastern United States. It grows in woods, along roads, and on rocky outcrops. It also grows on sandy banks and disturbed ground. These sites tend to be dry or somewhat dry. Its natural range includes areas with a temperate climate.

This spreading shrub has a rounded crown and crooked branches. Short, stout trunks support its thorny growth. It reaches 2–12 feet [0.6–3.66 metres] tall. Its spread reaches 3–10 feet [0.9–3.05 metres]. In northern Florida, it can form a small tree. Thin gray bark splits into narrow scales as stems age. Young twigs are hairy and reddish brown, with straight thorns. The small leaves grow alternately and have no lobes. Their oval or oblong blades have toothed or rounded edges. Green leaves may look glossy and bear scattered hairs. Fall foliage can turn yellow or deep red.

Single white flowers open from April to May. Each cup-shaped bloom has five petals and pale anthers. Their scent can seem unpleasant when they first open. It draws midges that help pollinate the flowers. Bees also visit the plant. Small pomes ripen from September to October. Their skins range from greenish yellow to dull red. Fruits grow alone or in groups of up to three. People can eat the firm flesh raw or cooked. Each fruit holds up to five fairly large seeds.

Give this hawthorn sun or partial shade and well-drained soil. Full sun supports better fruit crops than partial shade. It grows in sand, loam, clay, and shallow rocky soils. It accepts acid, neutral, and alkaline ground. It prefers drier soil but tolerates drought once established. Established plants also cope with very wet soil. It withstands heat and wind, but not salty sea air. NC State lists it for USDA zones 4–9.

Use it as a hedge, thorny barrier, or wildlife shrub. It takes pruning well and needs little upkeep. Birds and small mammals find shelter and eat its fruit. Several butterflies use it as a caterpillar host. Its hard, heavy wood can make small tools and mallets. NC State reports no major pest or disease problems. Thorns remain a concern where people pass close by. NC State lists it as non-toxic to cats, dogs, and horses. Plants For A Future reports no known hazards.