Overview

Clethra arborea is a bushy shrubs in the genus Clethra, part of the Clethraceae family, with deciduous foliage. Clethra arborea grows best in partial shade, and tolerates loam and sand soils and acid pH. Its UK hardiness is rated H5. Suggested uses include cottage and informal garden and low maintenance.

About

Clethra arborea, commonly known as the lily-of-the-valley-tree, is a flowering plant in the genus Clethra. It is found in Macaronesia where it is native to Madeira, extinct in the Canary Islands, and considered an introduced species in the Azores. In Madeira its natural habitat is laurisilva forest. Grow it in partial shade and loam and sand soil. In UK gardens it is hardy in most of the UK (RHS H5). It works well for cottage and informal garden and low maintenance. It tolerates acid soils, moist but well-drained conditions and south-facing, north-facing, west-facing and east-facing aspects. Plant in well-drained soil in sun or partial shade.

Wikipedia contributors, CC BY-SA 4.0Clethra arborea

About the genus

Clethra is a genus of flowering shrubs or small trees erected as a genus by Linnaeus in 1753.

Wikipedia contributors, "Clethra", CC BY-SA 4.0Clethra

Growing conditions

Best soil and position for Clethra

Sunlight
Partial shade
Soil type
Loam, Sand
Soil pH
Acid
Soil moisture
Moist but well-drained
Aspect
South-facing, North-facing, West-facing, East-facing
Exposure
Sheltered
UK hardiness
H5

Plant details

Clethra arborea size, habit and characteristics

Plant type
Shrubs
Habit
Bushy
Foliage
Deciduous
Suggested uses
Cottage and informal garden, Low Maintenance

Care notes

Pruning and caring for Clethra arborea

Propagation
Seed in spring or autumn, Softwood cuttings in early summer
Pest resistance
Generally pest-free
Disease resistance
Generally disease-free

Frequently asked questions

Where is the best place to plant Clethra arborea?

Clethra arborea prefers partial shade. It suits sheltered positions.

What soil does Clethra arborea need?

Clethra arborea grows best in loam and sand soil. It prefers acid soil. Aim for soil that stays moist but well-drained.

Is Clethra arborea hardy in the UK?

Clethra arborea has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.

How do I propagate Clethra arborea?

Seed in spring or autumn, Softwood cuttings in early summer.