Growing and Pruning Guide Rhododendron

Few shrubs make a spring statement quite like a mature rhododendron. Large clusters of pink, purple, red or white flowers appear above substantial evergreen foliage.

Where to plant

Rhododendrons prefer acidic, humus-rich soil and partial shade.

A woodland-style setting beneath high-canopied trees can be ideal, providedthe soil is not excessively dry.

Avoid exposed positions and locations that become waterlogged.

Caring for Rhododendrons

Water newly planted shrubs thoroughly and regularly.

Mulch with leaf mould, pine bark or other suitable organic matter. Avoid digging around the base because rhododendrons have shallow roots.

Feed with an appropriate acidic fertiliser if required.

When to prune

The ideal time is immediately after flowering.

Most rhododendrons need very little pruning.

How to prune

Remove faded flower clusters carefully, taking care not to damage the new shoots developing below them.

Remove dead, diseased or crossing branches.

If the shrub has become too large, selected older branches can be removed to gradually reduce its size.

Very old, established rhododendrons can sometimes be rejuvenated with harder pruning, but this is best done selectively rather than routinely.