Scientific Name: Clethra barbinervis
Common Name: Japanese sweet shrub, Chinese summersweet
Family Name: Clethraceae
Origin: S.E. Asia / Japan / China
Hardiness Zone: Zone 6: (-23 to -18 °C)
Plant Type: Shrub - deciduous
Mature Size: 2 - 3m x 2 - 3m (height x width)
Habit: Dense
Form: Round
Texture: Medium - coarse
Landscape Uses: Attract butterflies, Fragrance, Mixed shrub border, Summer interest, Woodland margin
Exposure: Full sun, Part sun/part shade
Soil or Media: Well-drained
Leaves: Simple, Alternate, Soft flexible, Heavily veined, Pinnate venation, Glabrous, Elliptic, Obovate, Serrate, Serrulate
Flowers: Raceme, White, Jul-Aug
Fruit: Capsule, Brown, Aug-Sep, (Persistent)
Key ID Features:
Leaves alternate, serrate with over 60 teeth per side, dark green, up to 13cm long; florets small, fragrant, white, in racemes up to 15cm long in late summer and autumn. Winter ID: mature specimens have attractive peeling bark; terminal bud about 6-10mm long; lateral buds < 1mm long; leaf scar rounded but notched at top for bud.