When Should I Prune Hydrangeas?
This is a question we are often asked. Hydrangeas are beautiful, but pruning them at the wrong time can mean fewer flowers the following year.
The key is knowing which type you have.
Mophead & Lace Cap (shown below top left and bottom left image)
These are the classic rounded or flat-headed hydrangeas. Mopheads look more compact, woody and glossy. They have the classic hydrangea look, with thicker leaves and a stronger shrub shape. Prune very lightly in spring, once the worst frosts have passed. Remove old flower heads and cut back to a strong pair of buds. Avoid cutting them hard, as many flower on older wood.
Paniculata (shown below top right image)
These usually have cone-shaped flowers. Prune in late winter or early spring. They flower on new growth, so they can be cut back more firmly to encourage strong stems and fresh flowers.
Arborescens (shown below bottom right image)
This includes types such as ‘Annabelle’. Annabelle types look softer, looser and more floppy. They often have huge white flower balls that can bend over, especially after rain. Prune in late winter or early spring. These also flower on new growth and can be cut back harder.
Climbing
Prune lightly after flowering in summer, only to keep them tidy or within their space.
The simple rule:
Old wood hydrangeas — prune lightly in spring after frosts.
New wood hydrangeas — prune in late winter or early spring.
A little care at the right time helps keep hydrangeas healthy, full and flowering beautifully.
If you are not sure which type you have, do not cut it hard.
Lightly remove the old flower heads in spring, after the frosts and wait until you can identify it properly.
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