Scientific Name:
Clethra barbinervis
Pronunciation:
KLETH-ruh bar-bih-NUR-viss
Common Name:
Japanese sweet shrub, Chinese summersweet
Family Name:
Clethraceae
Plant Type:
Shrub - deciduous
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.
Habit:
Dense
Form:
Round
Texture:
Medium - coarse
Mature Height:
2 - 3m
Mature Spread:
2 - 3m
Growth Rate:
Fast
Origin:
S.E. Asia / Japan / China
Hardiness Rating:
Zone 6: (-23 to -18 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Well-drained
Water Use:
Moderate
Landscape Uses:
Attract butterflies, Fragrance, Mixed shrub border, Summer interest, Woodland margin
Additional Info:
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Soft flexible, Heavily veined, Pinnate venation
Surfaces:
Glabrous
Colour in Summer:
Dark-green
Colour in Fall:
Red, Bronze
Shapes:
Elliptic, Obovate
Apices:
Acuminate
Bases:
Cuneate
Margins:
Serrate, Serrulate
Inflorescence Type:
Raceme, Floriferous
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Campanulate
Ovary Position:
Superior
Colour (petals):
White
Flower Scent:
Fragrant
Flower Time at Peak:
Jul, Aug
Fruit Type:
Capsule
Fruit Colour:
Brown
Fruiting Time:
Aug, Sep
Additional Info:
Persistent,
Bark Morphology:
Exfoliating
Bark or Stem Colour:
Brown
Propagation:
Seed, Softwood cuttings
Maintenance:
Low
Pest Susceptibility:
(Pest resistant, Disease resistant, Deer resistant)
Course(s):
- HORT 2355
Location(s):
- (GAZ) GAZebo
- (GAZN) GAZebo North
- (GAZW) GAZebo West : q.1