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Clethra delavayi Franch.

A large deciduous shrub to 4m tall, with arching shoots and blue-green leaves to 15cm long. Dense, horizontally held spikes of cup-shaped, fragrant white flowers are produced in midsummer

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Size
Ultimate height
2.5–4 metres
Time to ultimate height
10–20 years
Ultimate spread
2.5–4 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer White Green
Autumn Green
Winter
Position
  • Partial shade
Aspect

East–facing or North–facing or South–facing or West–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Clethraceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Clethra can be deciduous or evergreen trees or shrubs, sometimes with attractive bark, with simple leaves and small, fragrant, usually white, bell-shaped flowers in racemes or panicles

Name status

Correct

Plant range
W. China

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How to grow

Cultivation

Grow in fertile, humus-rich, moist but well-drained acidic soil in partial or dappled shade; a woodland garden is ideal

Propagation

Propagate by sowing seed in containers outdoors in spring or autumn. Take greenwood cuttings in early summer

Suggested planting locations and garden types
  • Flower borders and beds
Pruning

See pruning group 1

Pests

Generally pest-free

Diseases

Generally disease-free

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