Reed canary grass (Phalaris arundinacea)

Photo: Rasbak, CC BY-SA 3.0 · source

Pruning guide · Ornamental grass

Reed canary grass: when and how to prune

Phalaris arundinacea

Reed canary grass is best pruned in March and July.

Key facts
Pruning monthsMarch and July
FloweringJune–July
Native to BelgiumYes

Reed canary grass: when to prune it?

In March before growth starts, and if you like in July after flowering.

What else to prune in those months? March · July

Reed canary grass: how to prune it?

  1. In March, cut all old stems and leaves back to about 10 cm above the ground.
  2. In July, after flowering, you can cut back again to 15–20 cm: fresh foliage grows quickly.
  3. On ‘Picta’, remove plain green shoots completely at the base.
  4. The cuttings can go on the compost heap, but without pieces of rhizome.

How much to cut, and how often?

  • There are 2 pruning periods a year: March and July. You don’t have to prune in every one.

What does it mean for wildlife?

  • As a native plant, it feeds more insects than a non-native species.

Caution: Never dump prunings or dug-out runners in the countryside, along a stream or in a ditch: every piece of rhizome can grow again.

Nearby: related pruning guides

Plant profile: Reed canary grass · Pruning calendar and basic rules

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

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