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Pruning guide · Shrub
Oleander: when and how to prune
Nerium oleander
Oleander is best pruned in March and October.
| Pruning months | March and October |
|---|---|
| Nesting season (15 March–15 August) | Take care in March |
| Flowering | June–September |
| Native to Belgium | No, planted |
| Poisonous to people and pets | Yes, take care with children and pets |
Oleander: when to prune it?
In March, before it goes back outside, or in October after flowering, before you bring it in.
Oleander: how to prune it?
- Each year, remove a few of the oldest, bare stems low down: this keeps the shrub young and full.
- Shorten overlong shoots to just above a whorl of leaves; three new shoots usually grow from there.
- Spare shoots that have visible flower buds at the tip.
- A badly neglected shrub can be cut back to 30–40 cm in March; it will then flower less for a year.
How much to cut, and how often?
- There are 2 pruning periods a year: March and October. You don’t have to prune in every one.
- Prune in moderation: never remove more than about a third of the shrub at once.
What does it mean for wildlife?
- Pruning in March can fall in the nesting season (15 March–15 August). Check carefully for nesting birds first: disturbing an active nest is against the law.
- 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.
Caution: Wear gloves and long sleeves. Never burn the prunings, as the smoke is poisonous too, and do not leave them where children or animals can reach them.
Nearby: related pruning guides
This guide is compiled from the Bladwijzer plant profile and pruning calendar.