How to prune achillea millefolium 'cerise queen'

Deadhead throughout the flowering season (June–September); full cutback in autumn or early spring. Snip spent flower stems back to a side-shoot or the basal foliage mat. After the main season, shear the plant down to 10–15 cm. Lift and divide in spring, discarding the woody centre.

Deadhead regularly; full cutback annually; divide every 2–3 years. Achillea millefolium 'Cerise Queen' flowers prolifically and spreads readily. Deadhead faded blooms promptly to encourage repeat flowering and reduce unwanted self-seeding. Cut the whole plant back to its basal rosette in autumn after flowering finishes or in early spring. Divide clumps every 2–3 years to maintain vigour.

Snip spent flower stems back to a side-shoot or the basal foliage mat. After the main season, shear the plant down to 10–15 cm. Lift and divide in spring, discarding the woody centre.