Korean feather reed grass (Calamagrostis brachytricha)

Photo: James K. Lindsey, CC BY-SA 3.0 · source

Pruning guide · Ornamental grass

Korean feather reed grass: when and how to prune

Calamagrostis brachytricha

Korean feather reed grass is best pruned in March.

Key facts
Pruning monthsMarch
FloweringAugust–October
Native to BelgiumNo, planted

Korean feather reed grass: when to prune it?

Cut back in March, before the new leaves appear; leave the plumes standing all winter.

What else to prune in those months? March

Korean feather reed grass: how to prune it?

  1. Tie the clump together with string and cut it off in one go with shears or secateurs, 10–15 cm above the ground.
  2. Do not leave it too late: if the new shoots are already tall, you will cut off their tips.
  3. Chop up the cut stems before adding them to the compost heap.

How much to cut, and how often?

  • One pruning period a year: March.

What does it mean for wildlife?

  • If you only cut back in March, the old stems stand through the winter: insects overwinter in them and birds eat the seeds.

Caution: Do not cut back in autumn: the old clump protects the heart of the plant and gives insects shelter in winter.

Nearby: related pruning guides

Plant profile: Korean feather reed grass · Pruning calendar and basic rules

This guide is compiled from the Bladwijzer plant profile and pruning calendar.

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