Pruning common yarrow
Advice for October in the Netherlands
Common yarrow does not need pruning to grow or flower. Remove spent heads for a tidier clump or leave them standing; in spring, clear only dead stems. The months are a guide for gardens in the Netherlands and Belgium; growth stage and weather take priority.
Common yarrow — October
Check this first
Let a healthy plant grow without intervention. Firm dry stems can remain through winter; remove only material that rots, collapses or covers young growth.
Pay attention to this
- Do not cut low finely divided green leaves off with old stems.
- Keep flowering heads available to insects until they have genuinely finished.
- Cutting top growth does not stop underground spread.
Frequently asked questions
- Must yarrow be cut back every year?
- No. The species has no compulsory pruning requirement; clearing old flower stems is mainly cosmetic maintenance.
- Must I remove spent heads immediately?
- No. They can remain for structure or seed, for example. Cut only if that suits the desired appearance.
- Does hard cutting stop it spreading?
- No. Achillea millefolium can keep spreading; removing foliage does not permanently contain the clump.