Tree heath: when and how to prune

Tree heath: when to prune it?

JFMAMJJASOND

After flowering, in May–June.

What else to prune in those months? May · June

Tree heath: how to prune it?

1. Lightly trim the faded panicles to keep the shrub compact.
2. Never cut into old, bare wood: tree heath regrows from it poorly.
3. Remove frost-damaged branches only in spring, when you can see where new shoots appear.

How much to cut, and how often?

• One pruning period a year: May–June.
• Prune in moderation: never remove more than about a third of the shrub at once.

What does it mean for wildlife?

• Pruning in May–June can fall in the nesting season (15 March–15 August). Check carefully for nesting birds first: disturbing an active nest is against the law.
• Tree heath flowers in March–May, when it attracts bees.
• If pruning falls during flowering, wait until it is over or leave part of the plant to flower, so bees and butterflies still benefit.
• Prunings can go on a dead hedge or brash pile in a corner of the garden: shelter for hedgehogs, wrens and insects.

Common mistakes

• Clipping without first checking for nesting birds.
• Leaving a stub or sawing flush with the trunk: cut just outside the branch collar.

Nearby: related pruning guides

• Darley Dale heath (Erica × darleyensis)
• Irish heath (Erica erigena)
• Bell heather
• Cornish heath (Erica vagans)
• Dorset heath (Erica ciliaris)
• Winter heath

Plant profile: Tree heath · Pruning calendar and basic rules