Branches that extend out far from the climbing surface may also be pruned back in summer after flowering to prevent the plants from being pulled from their structures by heavy winds, ice or snow. Climbing hydrangea vines will grow well throughout Virginia in moist shady treelopping.buzz Size: 2MB. Apr 26, Pruning hydrangea bushes is not necessary unless the shrubs have become overgrown or unsightly. You can safely remove spent blooms (deadhead) anytime. However, there are a couple deadheading tips to keep in mind for optimal results.
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%.
What you want to do is wait until they start leafing out in spring. You'll probably notice some stems are light brown with no signs of life. Prune them back to just above where you see fat, green buds starting to open. Most of these buds should produce flowers. Immediately after the flowers fade in summer, cut these stems back if you wish.