Photo: Moriori, Public domain · source
Pruning guide · Shrub
Adam’s needle: when and how to prune
Yucca filamentosa
Adam’s needle is best pruned in April and September.
| Pruning months | April and September |
|---|---|
| Nesting season (15 March–15 August) | Take care in April |
| Flowering | July–August |
| Good for bees, butterflies and birds | Yes, for bees |
| Native to Belgium | No, planted |
Adam’s needle: when to prune it?
Pruning is not needed. Cut off the spent flower stem in September and remove dead leaves in April.
Adam’s needle: how to prune it?
- Cut the withered flower stem off as low as possible with sharp secateurs or a small saw.
- In April, pull or cut away dry brown leaves at the base of the rosette.
- A rosette that has flowered stops growing and slowly dies. Cut it out once the young side rosettes are big enough.
How much to cut, and how often?
- There are 2 pruning periods a year: April and September. 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 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.
- Adam’s needle flowers in July–August, 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.
Caution: Wear sturdy gloves and work carefully: the leaf tips are sharp and easily jab, even into your eyes.
Nearby: related pruning guides
Plant profile: Adam’s needle · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.