Pruning guide
How to prune tree rhododendron
More tree rhododendron care
Pruning tree rhododendron — FAQ
When should I prune tree rhododendron?
Immediately after flowering (late winter to spring, depending on climate). Remove spent flower trusses by snapping or cutting cleanly above the next bud. For branch removal, cut back to a healthy lateral or the main stem, avoiding large wounds on mature wood which heals slowly.
How often does tree rhododendron need pruning?
Annually for deadheading; corrective pruning only as needed. Tree rhododendron (R. arboreum) naturally forms a handsome tree habit and needs minimal pruning. Deadhead spent flower clusters after bloom to encourage next season's flowering. Remove dead or crossing branches as needed. Avoid heavy shaping — this species is best allowed to grow into its natural form with light corrective cuts only.
How do you prune tree rhododendron?
Remove spent flower trusses by snapping or cutting cleanly above the next bud. For branch removal, cut back to a healthy lateral or the main stem, avoiding large wounds on mature wood which heals slowly.