Black poplar: when and how to prune

Populus nigra

Black poplar is best pruned in July–August and November–February.

Updated on 10 October 2026

Key facts
Pruning months	July–August and November–February
Nesting season (15 March–15 August)	Take care in July–August
Flowering	March–April
Native to Belgium	Yes

Black poplar: when to prune it?

Dead, diseased and broken branches can be removed at any time of year. Formative pruning in winter or summer.

Prune while dormant, from November to March, but not in freezing weather.

What else to prune in those months? January · February · July · August · November · December

Little pruning needed. Give a young tree a single leader and remove crossing branches.
Have old trees along roads and paths checked regularly for falling branches.
Saw off heavy branches in two stages: first a little further out, then close to the trunk, so that the bark doesn’t tear.

There are 2 pruning periods a year: July–August and November–February. You don’t have to prune in every one.
Grows best when left alone. Only remove dead, diseased or awkward branches.

Pruning in July–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 too much: it grows best when left alone.
Leaving a stub or sawing flush with the trunk: cut just outside the branch collar.

Caution: Hard pruning triggers lots of epicormic shoots on the trunk.

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