How to prune red star cluster

Late winter to early spring for hard renewal; pinch tips throughout the growing season. Pinch or cut off spent flower clusters just above the next leaf pair to redirect energy into new buds. In late winter, cut the whole plant back by one-third to one-half to remove woody, exhausted stems and encourage a fresh flush of leafy, floriferous growth.

Deadhead weekly during bloom; hard cut-back once annually in late winter or spring. Pentas lanceolata is a free-flowering tropical perennial that blooms continuously and benefits from regular deadheading and tip-pruning to keep flowers coming. Cut back by up to half in late winter or early spring to prevent legginess. In frost-free climates it can be pruned hard to rejuvenate. Regular pinching is the key maintenance task.

Pinch or cut off spent flower clusters just above the next leaf pair to redirect energy into new buds. In late winter, cut the whole plant back by one-third to one-half to remove woody, exhausted stems and encourage a fresh flush of leafy, floriferous growth.