When should you prune a rhododendron?

  • The best time for pruning is immediately after flowering, typically in late spring or early summer. If rejuvenation pruning is needed, late winter or early spring is ideal while the plant is dormant.

How to prune a 30-year-old rhododendron?

  1. Light maintenance pruning: Remove dead, diseased, or crossing branches to improve airflow and shape the plant.
  2. Rejuvenation pruning: For an overgrown shrub, cut back one-third of the oldest branches to about 30–50 cm from the ground. Repeat this process over three years for gradual renewal.
  3. Encourage new growth: Trim branches just above a leaf node or dormant bud to stimulate fresh shoots.
  4. Deadhead spent blooms: Carefully remove faded flowers to direct energy toward new growth and next year’s blooms.

Why prune an older rhododendron?
Pruning helps manage size, improves overall health, and encourages a fresh burst of flowers that will make your garden shine!

Click on the "My Garden" icon below, and we’ll provide step-by-step care plans tailored to your rhododendron, with tips for pruning, feeding, and protecting it from pests.

Good luck! 🌸