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Hydrangeas produce spectacular blooms that brighten borders from summer into autumn. Knowing how and when to prune hydrangeas is the key to keeping them healthy, encouraging vigorous growth and ensuring reliable flowering year after year.
The most important step before pruning is identifying which type of hydrangea you have, as different varieties flower on different wood and require different pruning techniques. With the right approach, pruning becomes a straightforward annual task that helps your plants look their very best.
If you’re unsure which hydrangea you have, it’s often best to let it flower for a year before making any major pruning decisions. The shape of the flowers is usually the easiest way to identify the different types.
These compact, bushy shrubs are the most commonly grown hydrangeas.
Flower colours are often pink or blue depending on soil pH, while white varieties remain white regardless of soil conditions.
Recognised by their large cone-shaped flowerheads, panicle hydrangeas produce impressive displays that often change colour as the flowers mature.
Oakleaf hydrangeas are grown as much for their attractive foliage as their flowers. Their deeply lobed leaves develop beautiful red and bronze autumn colour.
These vigorous shrubs produce enormous rounded white flowerheads. ‘Annabelle’ is one of the best-known and most popular varieties.
A self-clinging climber that produces elegant lacecap-like flowers and is ideal for walls, fences and shaded areas.
Mophead and lacecap hydrangeas flower on stems produced the previous year, so careful pruning helps protect next season’s blooms.
Leave faded mophead flowerheads in place throughout winter. They provide a degree of protection for the developing buds beneath during frosty weather.
In early spring:
Lacecap hydrangeas can be deadheaded after flowering if preferred by cutting back to the second pair of leaves below each flowerhead. In spring, remove a small number of older stems to keep the plant vigorous.
👉 Expert Tip: Avoid cutting healthy stems lower than necessary. The buds just below the old flowerheads are where next year’s flowers will develop.
Panicle (Hydrangea paniculata) and smooth (Hydrangea arborescens) hydrangeas flower on new growth produced during the current season, making them much more forgiving to prune than mophead and lacecap varieties.
Prune in early spring before new growth begins. You can adjust the amount of pruning depending on the size and appearance you want:
Both pruning methods encourage healthy new growth and will reward you with a spectacular display of flowers during the summer.
These hydrangeas require only light maintenance.
Simply remove:
Avoid hard pruning, as mature plants naturally develop an attractive branching framework.
Prune shortly after flowering by shortening overly long shoots to keep the plant within its allotted space.
Most flowers are produced higher up the plant, so avoid heavy pruning in the upper sections unless absolutely necessary.
👉 Expert Tip: Climbing hydrangeas are slow to establish but become increasingly floriferous as they mature. Light annual pruning is usually all they need.
Once you’ve identified your hydrangea, pruning becomes a simple annual task that will keep it healthy and flowering at its best. Our knowledgeable team can help you choose the right variety for your garden and offer expert advice on pruning, feeding and seasonal care.
Visit us in Kington to browse our selection of beautiful hydrangeas, quality composts, feeds and pruning tools, and let us help you keep your garden looking its best throughout the seasons.
