SCIENTIFIC NAME: Aesculus glabra
Hardiness Zones 4 to 7.
Growth habit This slow growing tree, rarely reaching heights over 40 feet in Colorado is native from Pennsylvania to Nebraska. Its form is rounded and its large leaves and low branching provide a dense shade. It is a drought-adaptive tree, using less water during drought.
Foliage Leaves are large, and opposite palmately compound with 5 leaflets. Each leaflet is 3 to 6 inches long, elliptic-oblong and pointed at the tip.
Buds Large, long (2/3”) brown and pointed.
Flowers Large yellow inflourescence in May.
Fruit Large (1”+) brown hard capsule with prickly cover.
Bark Whitish smooth to platey turning more grayish-brown as tree ages.
Insects and diseases Minimal insect and disease problems.
Landscape value Medium size tree. Eexcellent choice for many landscapes especially xeriscape. Has a beautiful early orange autumn foliage. Often shades out lawn and seeds can be a nuisance.
Michael Dirr, Manual of Woody Landscape Plants (University of Georgia, 1990)