Hydrangeas can live for many years without ever needing to be pruned, but if your shrubs grow out of bounds or lose flowering vigor, then there are some essential pruning guidelines you must follow to ensure bountiful blooms the next year.
These generally bloom on old wood and require little pruning. Prune spent blooms immediately after flowering (midsummer), or remove only dead, damaged or unsightly wood
These hydrangeas begin in blooming in early to midsummer and can continue until summer's end, so they set their bloom buds during late summer or early fall. When pruning mopheads, you have two options, and will probably end up doing a combination of both:
Exception: If you have a reblooming variety such as Penny Mac that flowers on new wood as well as old wood, you'll want to prune a little every year to keep the new wood coming.
You can get away without pruning oakleaf hydrangeas at all, but if you want to keep them well-shaped, cut dead stems back at the base in late winter or early spring.
These shrubs bloom on new wood and actually produce larger blooms if cut back to the ground in late winter.
SHOP FOR HYDRANGEASThis is one of the easiest hydrangeas to prune. Because it blooms only on new wood, you can just cut it back to the ground in late winter, before any new buds appear. If you experience some flopping of flowering branches, then leave a framework of old growth to help support the branches by only cutting stems back to 2 feet from the ground.
Prune this hydrangea in late winter to keep the plants from becoming overgrown and encourage more new growth, more flower buds, and larger blooms. You can remove dead flowers, as soon as they become unattractive and clean up the overall shape of the plant.
Climbing hydrangea requires little to no pruning, but if you need to trim it to keep it in bounds, you should prune it just after flowering. Cut back last year's flower shoots to 1 to 2 inches and prune out shoots that fail to cling or have pulled away from their support.
Remember, Hydrangeas are shade tolerant, but they do require adequate sunlight and irrigation to bloom properly. In northern climates and coastal areas, Hydrangeas will grow beautifully in full sun, but in warmer southern areas, a location in part shade where the shrub receives full to partial morning sun with protection from harsh afternoon sun is ideal. Placed in the right location, given ample moisture, and pruned using the guidelines above, your Hydrangeas will be an abundant source of gorgeous blooms long into the future.
SHOP FOR HYDRANGEASTo download our Complete Hydrangea Care Guide, please follow this link. Because the file is in PDF format, Adobe Reader may be required to view it. We hope that you will enjoy this guide and refer to it for years to come.