These shrubs can be pruned in early spring, fall or winter but not when preparing to bloom in summer. They do not need to be pruned every year. However, they can be pruned to the ground every year once established to encourage vigorous new growth or pruned to one-third to one-half the height to form a tidier bush with smaller flowers.
Most of the other hydrangeas should be pruned in summer, once they have finished blooming. Most of these bloom on what's called"old wood" - growth from the year before. If you prune them in early spring, you risk cuting off the dormant flower buds.
By pruning right after the blooms have faded, you allow the plant time to set buds for the next year. May 10, Prune the hydrangea to reduce its size. If your hydrangea has grown quite large, you can prune it in June or July (just after the blooming season) to contain it a bit. Trim back the branches by 1/3 to the nearest joint. In most cases hydrangeas will grow back quite quickly, so you may not be able to maintain the smaller size for long%. How do you prune a hydrangea bush?
To get bigger flowers, cut them all the way back In late winter or early spring, these shrubs can be cut all the way back to the ground.
Smooth hydrangeas will produce much larger blooms if pruned hard like this each year, but many gardeners opt for. How To Prune Hydrangeas How do you prune a hydrangea bush?Laura S. Harris (, April ) How do you prune a hydrangea bush? treecleanup.buzz