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Pruning guide · Fern
Hard shield fern: when and how to prune
Polystichum aculeatum
Hard shield fern is best pruned in March.
| Pruning months | March |
|---|---|
| Native to Belgium | Yes |
Hard shield fern: when to prune it?
In March, before the new croziers unfurl. Otherwise this fern needs no pruning.
What else to prune in those months? March
Hard shield fern: how to prune it?
- Cut the old fronds off just above the crown, even if they are still green: the new fronds will then show off well.
- If you want to keep the evergreen fronds longer, just remove the brown and damaged ones.
- Work carefully around the scaly croziers in the centre.
- Wear gloves: the prickly tips of the fronds are a little sharp.
How much to cut, and how often?
- One pruning period a year: March.
What does it mean for wildlife?
- As a native plant, it feeds more insects than a non-native species.
Caution: Do not wait too long: once the new fronds are out, it is easy to cut them off by mistake.
Nearby: related pruning guides
- Christmas fern (Polystichum acrostichoides)
- Japanese tassel fern (Polystichum polyblepharum)
- Korean rock fern (Polystichum tsus-simense)
- Soft shield fern
- Western sword fern (Polystichum munitum)
Plant profile: Hard shield fern · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.