How to prune henderson's allamanda

Late winter to early spring before active growth resumes. Cut back main climbing stems by one-third to one-half, pruning to a node or lateral shoot. Remove any dead, crossing, or weak stems entirely. Tie remaining strong stems to their support after pruning.

Annually in late winter; occasional light tidying through summer. Henderson's Allamanda is a strong-growing climber that needs firm annual pruning to prevent it becoming a tangled mass and to maximize flowering on new wood. Cut back long stems significantly in late winter. Wear gloves throughout — the milky latex sap causes skin irritation and is toxic if ingested.

Cut back main climbing stems by one-third to one-half, pruning to a node or lateral shoot. Remove any dead, crossing, or weak stems entirely. Tie remaining strong stems to their support after pruning.