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Epaulette tree

Pterostyrax hispidus (ter-oh-STY-raks HISS-pih-dus)

Family: Styracaceae Non-native Canopy (>40 ft)

The Epaulette tree is a flowering, fragrant, tree in the storax family, a small family of flowering plants containing 12 genera and about 160 species of trees and shrubs. It is native to Japan and, at maturity (20 to 50 years), can reach 50 feet in height and 40 feet in width. Alternatively, it can be trained (pruned) as a large, 15 to 20 foot shrub. It flowers early in its life cycle with hanging, white blossoms that appear in spring and give off a lemony citrus fragrance. The genus name comes from the Greek words pteron meaning a wing plus Styrax for the winged seeds of one species ( P. corymbesus ). The species name means bristly, in reference to the fruit. The Epaulette tree prefers a hot sunny location with deep, fertile, acidic, well-drained, moist soil. It will tolerate clay or sandy soil as well as wind, drought, light shade, and some air pollution. Light afternoon shade in hot summer climates is beneficial, but flowering tends to diminish as the amount of shade increases. Site in a location sheltered from cold, winter winds. The Epaulette has a rounded form that opens up as the tree matures. It will cast a dense shade and can also act as an attractive barrier or shade tree. Propagate by seed or cuttings and, if needed, prune in winter. Diseases, Insect Pests, and Other Plant Problems: No known diseases or insect pests.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 59 attributes.

How it fits the guild

Guild layer 1 - Canopy (>40 ft) Optimal soil pH Acid (<6.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Fills a similar niche Hydrangea serrata 'Omacha Variegata' Pterostyrax corymbosus Symplocos tinctoria

Full plant profile

Growing Conditions
Plant type
Shrub; Tree
Life cycle
Woody
USDA zones
4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Clay; High Organic Matter; Loam (Silt); Sand
Soil pH
Acid (<6.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist
Available space
24-60 feet
Mature size
Height: 20 ft. 0 in. - 50 ft. 0 in. | Width: 20 ft. 0 in. - 40 ft. 0 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
1 - Canopy (>40 ft)
Form & Appearance
Habit / form
Multi-stemmed; Open; Rounded
Texture
Medium
Foliage
Deciduous
Leaf color
Gray/Silver; Green
Leaf type
Simple
Leaf arrangement
Alternate
Leaf shape
Oblong; Ovate
Leaf margin
Dentate; Serrate
Leaf feel
Papery
Leaf size
> 6 inches long
Hairs present
Yes
Leaf detail
Oblong to oblong ovate leaves, 3 to 7.5 inches, dark green above, silvery green underneath. Yellow fall color.
Fall color
Gold/Yellow
Flower color
White
Flower value
Fragrant; Showy
Flower form
Panicle
Flower shape
Bell
Flower size
> 6 inches
Flower detail
Large, fragrant, 5 to 10 inch dangling panicles of creamy white flowers appear in late spring or early summer. The flowers (each 1/3 of an inch long) hang from one side of the panicle and resemble epaulettes.
Bloom time
Spring; Summer
Fruit type
Drupe
Fruit value
Showy
Fruit size
< 1 inch long, < 1 inch wide
Fruit detail
1/2 inch dry drupes appear in the flowering panicles in late summer and fall. The 5-ribbed fruits hang in clusters that persist into winter.
Bark color
Dark Brown
Bark detail
Fine, scaly, interwoven ridges.
Stem color
Brown/Copper; Gold/Yellow
Stem detail
Branchlets initially yellowish-brown glabrous, becoming silvery-brown with age.
Wildlife & Ecology
Native status
Non-native
Origin
Japan
Distribution
Introduced into Korea
Food & Medicine
Harvest time
Fall; Summer
Fruit type
Drupe
Landscape Use
Landscape location
Lawn; Meadow
Landscape theme
Asian Garden; Shade Garden
Design feature
Barrier; Border; Flowering Tree; Hedge; Shade Tree
Garden tags
#deciduous #tree #flowering tree #showy flowers #shrub #fall color #multistemmed #flowering shrub #fragrant flowers #rounded #peeling bark #fast growing #acidic soils tolerant #white flowers
Problems & Resistance
Resistant to
Compaction; Drought; Heat
Propagation
Seed; Stem Cutting

Planted at Hunnicutt

Nobody’s planted this one yet.