Common Hackberry (Celtis occidentalis): Tough Native Shade Tree for Tough Sites

Common hackberry, also called American hackberry, is a large, adaptable native tree that thrives where many others fail: urban pollution, compacted soil, drought, wind, and alkaline conditions. Its distinctive warty bark, elm-like form, and wildlife value make it a resilient choice for challenging landscapes.

Botanical Profile

• Family: Ulmaceae (elm family)
• Genus: Celtis
• Species: occidentalis
• Synonyms: Celtis canina, C. occidentalis var. canina, C. occidentalis var. pumila, C. pumila, C. pumila var. deamii

Growth and Appearance

Hackberry reaches 40–60 feet tall (occasionally 100 feet) with a broad, rounded crown and arching branches. The bark is its most ornamental feature: gray-brown with prominent, corky warts and ridges. Leaves are ovate, serrated, and rough-textured, turning yellow in fall. Small, orange-red to purple drupes (¼ inch) ripen in fall and persist into winter, feeding birds.

Adaptability

Extremely tolerant of adverse conditions: drought, flooding, alkaline soil, road salt, wind, and pollution. Hardy in USDA zones 2–9. Fast-growing when young, moderate with age. Relatively pest-free, though nipple gall on leaves is common but cosmetic.

Landscape Uses

Shade tree for large areas, street tree (with root space), windbreak, and wildlife planting. Its deep root system makes it suitable near pavement if given adequate soil volume. A tough, low-maintenance native for sustainable landscapes.