Cornish heath (Erica vagans): when and how to prune

Cornish heath (Erica vagans): when to prune it?

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In March–April, just before new growth starts and once the hardest frosts are over.

What else to prune in those months? March · April

Cornish heath (Erica vagans): how to prune it?

1. Clip or shear off the old flower spikes just below the faded flowers.
2. Stay in the green: never cut into bare, old wood, as heathers rarely reshoot from it.
3. A large group is quickly trimmed with hedge shears.
4. Trimming every year keeps the plant dense and prevents a bare, sprawling mound with an open centre.

How much to cut, and how often?

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

What does it mean for wildlife?

• Pruning in March–April can fall in the nesting season (15 March–15 August). Check carefully for nesting birds first: disturbing an active nest is against the law.
• Cornish heath (Erica vagans) flowers in August–October, when it attracts bees.
• 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

• Bell heather
• Darley Dale heath (Erica × darleyensis)
• Dorset heath (Erica ciliaris)
• Cross-leaved heath
• Irish heath (Erica erigena)
• Tree heath

Plant profile: Cornish heath (Erica vagans) · Pruning calendar and basic rules