Pruning sea thrift
Advice for October in the Netherlands
Sea thrift is Armeria maritima, not an ornamental grass, and forms an evergreen cushion. Do not cut that cushion bare each year; at most, trim the spent flower stalks. Months are guidelines for the Netherlands and Belgium; also assess growth, flowering and the weather forecast.
Sea thrift — October
Check this first
No scheduled pruning is needed. Retain healthy foliage and living rosettes; selectively tidy only clearly dead or rotting material. Any post-flowering trim depends on the actual flowering stage.
Pay attention to this
- Do not treat sea thrift as deciduous ornamental grass.
- Do not cut deeply into the living cushion.
- A brown, wet centre calls for a drainage check; harder pruning does not fix root rot.
Frequently asked questions
- Should sea thrift be cut short in March?
- No. Retain the green cushion and remove only loose dead debris.
- What should I do with faded pink flower heads?
- You may cut their leafless stalks just above the foliage.
- Why is the centre of the clump failing?
- Check whether the soil stays too wet. Armeria needs drainage; pruning does not repair damaged roots.