Photo: KENPEI, CC BY-SA 3.0 · source
Pruning guide · Shrub
Holly olive: when and how to prune
Osmanthus heterophyllus
Holly olive: clip a hedge in May–June; prune a free-standing tree or shrub in April–May.
| Pruning months | April–June |
|---|---|
| As a hedge | May–June |
| As a free-standing shrub | April–May |
| Nesting season (15 March–15 August) | Take care in April–June |
| Flowering | September–October |
| Native to Belgium | No, planted |
Holly olive: when to prune it?
As a hedge
As a free-standing shrub
In spring (April–May); trim a hedge once, in May–June.
Holly olive: how to prune it?
- It grows slowly and takes pruning well, even into old wood.
- Trim a hedge once a year; trimming later in summer costs you the autumn flowers.
- Prune a free-standing shrub with secateurs: hedge shears cut leaves in half and they turn brown.
How much to cut, and how often?
- Trim a hedge once or twice a year, after the first flush of growth (late June) and, if needed, in late summer. Check first that no birds are nesting.
What does it mean for wildlife?
- Pruning in April–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.
- A dense hedge gives birds a place to nest and shelter, and hedgehogs take cover underneath. Leave some leaves at the base.
- 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.
- Letting the hedge grow wider at the top than at the bottom: the base then goes bare.
Caution: Wear sturdy gloves against the spines, and don’t prune while birds are still nesting in the shrub.
Nearby: related pruning guides
Similar to: Difference from holly · Difference from Oregon grape
Plant profile: Holly olive · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.