How to prune solidago 'fireworks'

Late winter for annual cutback; late May for optional height-reduction pinch. Cut all stems to within a few inches of the ground in late winter. For a tidier, shorter plant in a formal border, pinch or cut stem tips back by one-third in late May. Remove spent flower heads in autumn to reduce self-seeding if needed.

Annually (late-winter cutback); optional late-spring pinching; deadheading as desired. Solidago 'Fireworks' is a well-behaved cultivar with arching, plume-like flower sprays. Cut stems back to ground level in late winter. A Chelsea chop — trimming tips by one-third in late May — can produce a shorter, less floppy plant without sacrificing the signature arching form. Deadhead if self-seeding needs limiting.

Cut all stems to within a few inches of the ground in late winter. For a tidier, shorter plant in a formal border, pinch or cut stem tips back by one-third in late May. Remove spent flower heads in autumn to reduce self-seeding if needed.