How to prune gold plate yarrow

Shear after first bloom (midsummer); final cut-back in late autumn or early spring. Remove spent flower heads by cutting stems back to lateral buds or shear the whole plant by half after peak bloom. At season's end, cut all growth down to a few inches above the ground. Divide congested clumps every 2–3 years in spring.

Shear once mid-season; full cut-back once annually; divide every 2–3 years. Gold Plate is a tall cultivar of Achillea filipendulina reaching up to 4 feet. Deadhead or shear spent flower heads after the first bloom flush to encourage a second flush and reduce self-seeding. Cut plants back by two-thirds in late summer after flowering is complete. Tidy to the base in late autumn or early spring.

Remove spent flower heads by cutting stems back to lateral buds or shear the whole plant by half after peak bloom. At season's end, cut all growth down to a few inches above the ground. Divide congested clumps every 2–3 years in spring.