Ohio Buckeye
Aesculus glabra · Deciduous broadleaf hardwood
Plant Family
Sapindaceae
Tree Category
Shade Tree, Ornamental, Flowering Tree
Variety / Cultivar
Species type, no specific cultivar identified
Hardiness Zones
USDA Hardiness Zones 3 through 7, displaying strong cold hardiness and good adaptability to continental temperate climates.
About This Tree
A small to medium-sized deciduous tree with a rounded to oval, somewhat irregular crown and a medium-dense canopy. Features distinctive palmately compound leaves, upright flower clusters, and spiny husks enclosing shiny brown nuts.
Leaf Characteristics
Palmately compound leaves with typically 5 (sometimes 7) leaflets. Leaflets are oblong-lanceolate, 3 to 6 inches long, finely serrated along the margins, dark green above and paler beneath, turning yellow, orange, or red in autumn. Arranged oppositely on the stems.
Bark Characteristics
Light gray to brown bark, becoming rough, furrowed, and scaly with age, often developing interesting scaly plates or ridges. When bruised or broken, the twigs and bark emit an unpleasant, pungent odor.
Growing Information
Origin Region
Native to central and eastern North America, well-adapted to the Midwest and widely cultivated in temperate parks and landscapes.
Growing Season
Leafs out in early spring, produces showy panicles of yellowish-green flowers in mid-to-late spring, develops spiny seed capsules in late summer, and drops leaves relatively early in autumn after turning yellow or orange-red. Best planted in early spring or autumn.
Sunlight & Water Needs
Thrives in full sun to partial shade. Prefers moist, well-drained, rich soils, but demonstrates decent adaptability to various soil types once established. Moderate water needs with some tolerance to brief dry spells, though foliage may scorch in severe drought.
Mature Size
Typically reaches 20 to 40 feet in height with an equal or slightly lesser spread. Growth rate is slow to moderate. Lifespan is generally around 60 to 100 years.
Special Characteristics
Notable for its striking spring flower panicles, unique palmately compound foliage, and attractive autumn color. Nuts are toxic to humans and livestock, but the wood is lightweight and occasionally used for artificial limbs or boxes.
Wildlife & Ecology
The flowers provide nectar for bees and other insect pollinators. Hummingbirds frequently visit the blooms. The nuts are consumed by squirrels and other small mammals, though the high saponin content limits widespread foraging.