How to prune dahlia 'boom boom white'

Pinch in late spring after planting; deadhead throughout summer; cut back after first autumn frost. Pinch the central growing tip above the third set of leaves to promote branching. Deadhead by cutting spent flower stems back to a lateral bud or leaf joint to trigger repeat blooming.

Pinch once at establishment; deadhead weekly during flowering season. Dahlias benefit significantly from pruning. Pinch out the growing tip when plants reach 30–40 cm (12–16 in) to encourage bushy growth and more blooms. Deadhead spent flowers regularly throughout the season to extend flowering. Cut stems back to ground level after the first frost kills the foliage.

Pinch the central growing tip above the third set of leaves to promote branching. Deadhead by cutting spent flower stems back to a lateral bud or leaf joint to trigger repeat blooming.