Pruning hydrangeas depends on the type of hydrangea you have. Here's a breakdown:
1. Hydrangea macrophylla (Bigleaf Hydrangea)
* For blooms on old wood: This type of hydrangea blooms on stems that grew the previous year. Prune them immediately after flowering in summer.
* Remove spent flower heads.
* Cut back stems to a pair of healthy buds. This encourages new growth for next year's blooms.
* Remove any dead or damaged branches.
* For blooms on new wood: Some varieties are bred to bloom on new wood. Prune them in late winter or early spring before new growth appears.
* Cut back stems to a few inches above the ground. This promotes vigorous new growth.
* Remove any dead or damaged branches.
2. Hydrangea paniculata (Panicle Hydrangea)
* For blooms on new wood: These hydrangeas bloom on new growth. Prune them in late winter or early spring before new growth appears.
* Remove dead or damaged branches.
* Cut back stems to a few inches above the ground. This encourages vigorous new growth and large blooms.
* Optional: If you want a more compact plant, prune back to about one-third of its original height.
3. Hydrangea arborescens (Smooth Hydrangea)
* For blooms on new wood: These hydrangeas bloom on new growth. Prune them in late winter or early spring before new growth appears.
* Remove dead or damaged branches.
* Cut back stems to a few inches above the ground. This promotes vigorous new growth.
* Optional: If you want a more compact plant, prune back to about one-third of its original height.
4. Hydrangea quercifolia (Oakleaf Hydrangea)
* For blooms on old wood: These hydrangeas bloom on old wood, but you can prune them to maintain their shape.
* Prune lightly after flowering.
* Remove spent flower heads and any dead or damaged branches.
* You can also thin out congested branches in the late winter or early spring.
General Pruning Tips:
* Use sharp, clean pruning shears. This prevents damage to the plant.
* Don't prune too much at once. This can stress the plant and weaken its growth.
* Prune in the direction of the buds. This will encourage the plant to grow in a desired direction.
* Remove any weak or crossing branches. This helps to improve air circulation and light penetration.
* Fertilize after pruning. This will help the plant to recover and grow new foliage.
Important Note:
* The timing and intensity of pruning can affect the size and color of your hydrangea blooms. Experiment with different methods to find what works best for your plants in your specific climate.
* Always consult a reputable gardening guide or expert for specific pruning recommendations based on your hydrangea variety and local conditions.
