Pterostyrax corymbosa (Little EpauletteTtree)


Botanical Information

FamilyStyracaceae
GenusPterostyrax
Speciescorymbosa
CategoryWoody
TypeTree (deciduous), Shrub (deciduous)
OriginNative to Japan.

Details

USDA Hardiness Zone7 - 8
USDA Hardiness Ref.
Canadian Hardiness Zone7b
Canada Hardiness Ref.
RHS Hardiness ZoneH5
RHS Hardiness Ref.
Temperature (°C)-15 to -10
Temperature (°F)5 - 14
Height7 - 17 m
Spread6 - 12 m
GrowthMedium
Flowering PeriodApril, May, June, July, August

Description and Growing Information

General DescriptionPterostyrax corymbosa is a low-growing, often broad-statured tree with many white blooms hanging down below the branches in spring. The ribbed fruit persists into winter.
ShapeFairly rounded, sometimes demonstrating a more vase-like shape. When the specimen is young it tends to be more compact. As it ages the slender, low branches grow more openly. It can be quite broad in form, similar in character to Cornus alternifolia.
LandscapeThis tree is not widely used or recognized in the landscape trade. However, since it is somewhat pollution tolerant it could be used as a street tree. Typically it is used in patio borders or as a specimen. It will provide year-round interest with fragrant, showy flowers in spring, yellow autumn cloak and winter fruit.
PropagationBy seed sown in autumn into containers and placed in a vented cold-frame to overwinter. Seed need a minimum of 5°C for three months to ensure germination. Also by semi-hardwood cuttings collected in late summer and rooted under mist and bottom heat.
CultivationTolerant of acidic to partially alkaline soil containing clay, loam or sandy loam. The soil must be moist and well-drained. There is a specimen in the A. M. Cuddy Gardens growing in partial shade on heavy, clay soil and it seems to thrive and flower profusely without flaw each year. Should be planted in situations where it is protected form the cold winds of winter.
PestsNo pests or diseases of note.
Notable SpecimensWakehurst Place, Ardingly, Haywards Heath, Sussex, England.
HabitatFound growing in open woodland areas and on sloping terrain.

Photographs