Photo: Magnus Manske, CC BY-SA 3.0 · source
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Pruning guide · Perennial
Spiny bear’s breeches: when and how to prune
Acanthus spinosus
Spiny bear’s breeches is best pruned in March and August–September.
| Pruning months | March and August–September |
|---|---|
| Flowering | June–August |
| Good for bees, butterflies and birds | Yes, for bees |
| Native to Belgium | No, planted |
Spiny bear’s breeches: when to prune it?
After flowering, in August–September, and again in March to clear away the old leaves.
What else to prune in those months? March · August · September
Spiny bear’s breeches: how to prune it?
- Cut the faded flower stems off at the base, just above the leaves.
- In March remove last year’s dead foliage before the new leaves appear.
- In summer remove leaves with powdery mildew to keep the plant looking fresh.
How much to cut, and how often?
- There are 2 pruning periods a year: March and August–September. You don’t have to prune in every one.
What does it mean for wildlife?
- Spiny bear’s breeches flowers in June–August, when it attracts bees.
- If pruning falls during flowering, wait until it is over or leave part of the plant to flower, so bees and butterflies still benefit.
Caution: Wear sturdy gloves: the spines on the leaves and bracts go straight through thin fabric.
Nearby: related pruning guides
Plant profile: Spiny bear’s breeches · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.