St Lucie cherry: when and how to prune

Prunus mahaleb

St Lucie cherry is best pruned in June–August.

Updated on 11 October 2026

St Lucie cherry: when to prune it?

In summer, in dry weather (June–August).

Prune cherries and their relatives in summer, in dry weather. Wounds made in autumn and winter risk silver leaf and bacterial canker.

What else to prune in those months? June · July · August

Little pruning needed: remove dead, diseased and crossing branches and otherwise let the shrub grow freely.
Wounds in autumn and winter invite gummosis; in summer, in dry weather, they heal faster.
To keep it smaller, regularly remove an old branch rather than cutting everything back at once.

Pruning in June–August can fall in the nesting season (15 March–15 August). Check carefully for nesting birds first: disturbing an active nest is against the law.
As a native plant, it feeds more insects than a non-native species.
Prunings can go on a dead hedge or brash pile in a corner of the garden: shelter for hedgehogs, wrens and insects.

Clipping without first checking for nesting birds.
Pruning in autumn or winter: the wounds then let in silver leaf and gummosis.
Pruning too much: it grows best when left alone.
Leaving a stub or sawing flush with the trunk: cut just outside the branch collar.

Caution: Don’t prune in wet weather or in autumn or winter: disease can then enter the wounds, as in all cherries.

This guide is compiled from the Bladwijzer plant profile and pruning calendar.