White Ash
Fraxinus americana · Deciduous Hardwood
Plant Family
Oleaceae
Tree Category
Shade and Forest Tree
Variety / Cultivar
Wild type
Hardiness Zones
USDA Hardiness Zones 3 through 9, demonstrating high adaptability to varying northern and southern continental climates.
About This Tree
A large deciduous tree with an upright, oval to rounded crown at maturity. Known for its strong, straight trunk, dense branching structure, and high-value timber. As seen on the log sample, it features deeply furrowed, diamond-patterned bark that makes identification relatively easy even when leaves are absent.
Leaf Characteristics
Pinnately compound leaves, typically featuring 5 to 9 leaflets (most commonly 7). Leaflets are oval to lance-shaped, 3 to 5 inches long, with finely serrated or entire margins. Arranged in opposite pairs on the stem, turning a striking purple, yellow, or bronze in the fall.
Bark Characteristics
Thick, dark gray to brownish-gray bark characterized by distinct, interlacing ridges that form a diamond-shaped pattern. As the tree ages, the ridges become more pronounced and furrowed. Patches of greenish-gray lichen are frequently visible on the surface.
Growing Information
Origin Region
Eastern and central North America, ranging from Nova Scotia west to Minnesota, and south to northern Florida and eastern Texas.
Growing Season
Leafs out in late spring after the threat of frost has passed, produces inconspicuous flowers in spring, develops winged seeds (samaras) in late summer, and drops leaves in autumn after turning vibrant yellow, purple, and red. Dormancy extends from late fall through winter.
Sunlight & Water Needs
Thrives best in full sun, requiring at least six hours of direct sunlight daily, though it can tolerate partial shade when young. Prefers rich, moist, well-draining soils but shows moderate adaptability to different soil types. Requires regular moisture during establishment.
Mature Size
Expected mature height ranges from 50 to 80 feet with a spread of 40 to 70 feet. Growth rate is moderate to fast. Typical lifespan is up to 150 years under ideal conditions, with trunk diameters reaching 2 to 3 feet or more.
Special Characteristics
Renowned for the exceptional shock resistance and flexibility of its wood, making it historically and commercially favored for tool handles, baseball bats, oars, and furniture. Displays attractive fall foliage.
Wildlife & Ecology
Provides crucial food and habitat for native wildlife. The seeds are consumed by various birds and small mammals, while the foliage is browsed by deer. It also serves as a host plant for numerous insect species, though it currently faces significant threat from the invasive Emerald Ash Borer.