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This article was co-written by Maggie Moran. Maggie Moran is a professional gardener in Pennsylvania.
This article has been viewed 14,277 times.
Pruning hydrangeas is one way to help maintain their beautiful shape and encourage them to bloom profusely year after year. Not every hydrangea species should be pruned at the same time, so it’s important to know what type you’re growing before pruning. If you do this at the wrong time, you can cut off the next blooming season as well. See step 1 below to learn about when and how to prune hydrangeas.
Steps
Pruning hydrangeas blooming on old branches
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Determine if your hydrangea is blooming on an old branch. In other words, these hydrangeas will bloom on last year’s flower buds. Hydrangeas with this feature usually bloom in early summer and fade in midsummer. At this time, the bush begins to bud and will bloom the following year. Types of hydrangeas that bloom on old branches include:
- Hydrangea, Mopleaf or Lacecap ( Hydrangea macrophylla and H. serrata )
- Oakleaf hydrangea ( H. quercifpia )
- See pictures at http://www.hydrangeashydrangeas.com/identify.html to identify your hydrangea type before planning a pruning.
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Prune the tree right after the blooming season. This type of hydrangea begins to bud soon after the flowers have bloomed in late summer and early fall, so it is important to prune the plant as soon as the flowers begin to fade in mid-summer. This way you can prune the bush before it starts to produce flower buds that will bloom next year. The longer you wait, the more likely it is that the plant will lose growth next season. [1] X Research Source
- If you miss the occasion, wait until next year to prune. Hydrangeas do not require annual pruning, so you can wait without problems.
- If you don’t like the shape of your tree then you can just prune – but be aware that if this is not done at the right time in mid-summer, you could run the risk of worsening the shape of the tree by the end of the summer. next spring.
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Cut old flowers. As soon as the flowers fade, use your hands to pluck the dead flowers. Break just below the calyx, at the tip of the flower stalk. This makes the hydrangea more beautiful throughout the blooming season.
- You can also remove dead and dying branches at this point; cut close to the root.
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Remove the oldest branches. As they live for many years, hydrangeas will produce fewer flowers. You can stimulate the tree to grow new branches by removing the oldest branches – up to about a third of the branches on the tree. With large branches, you may need to use scissors to cut the tree. Cut the oldest branches close to the base.
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Prune the tree to reduce its size. If the tree grows too large, you can prune it in June or July (right after the blooming season) to slow it down a bit. Cut about 1/3 of the length of the branch, above the nearest node. Hydrangeas usually regrow very quickly, so you probably won’t maintain their small size for long.
- This type of pruning is not necessary for the healthy growth of the tree. You should only do it when the tree takes up too much space. [2] X Research Source When planting a new hydrangea, it’s best to choose a location where it can grow freely.
- The “Endless Summer” hydrangea is an exception. This flower doesn’t require as much maintenance as other species and can be pruned in any season – there’s no wrong time. [3] X Research Sources
- Endless Summer hydrangeas may need no care until the plant is fully grown. You can then remove wilted flowers in the spring or fall to stimulate new flowering.
Prune hydrangeas that flower on new branches
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Determine if your hydrangea is of the new branch bloom type. These hydrangeas will sprout new branches each spring and then bloom in the summer. They usually flower later than hydrangeas that bloom on old branches because it takes longer to bud. Here are the hydrangeas that flower on new branches:
- Species of Panicle hydrangeas ( H. paniculata ), such as the PeeGee or Limelight hydrangea. These hydrangeas can be pruned into woody plants to create accents in the garden. [4] X Research Sources
- Smooth hydrangeas ( H. arborescens ), eg Annabelle hydrangea
- See the pictures at http://www.hydrangeashydrangeas.com/identify.html to identify the type of hydrangea you are growing before you begin your pruning plan.
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Prune the tree in late winter before it sprouts. These hydrangeas will flower on new branches, so you need to prune them in the winter, before they start to grow. This is the best time of year to prune these hydrangeas, but you can also prune at other times – just avoid the time right before the plants start to bloom in spring and early summer.
- You can prune all branches to about a third of their length in winter. Pruning the tree at this time will help the bush produce larger and more vibrant flowers.
- However, many gardeners prefer smaller hydrangeas that grow on stronger stems. If you’d like to have such flowering plants, you can prune them in the fall to help them grow stronger branches before they bloom.
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Prune dead flower stalks and intertwined branches. Use hand-held pruning shears to cut dead flower stalks and overgrown branches. This helps plants have space to grow and better air circulation, stimulating the plant to grow stronger.
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Leave some old branches to support the tree, helping the tree grow stronger. Hydrangeas often grow large and heavy, so don’t prune too much of old branches. Leave a bunch of twigs intact so the plant doesn’t collapse under the weight of the flowers. [5] X Research Sources
Advice
- Avoid pruning trees in an attempt to reduce tree size. Instead, you should plan ahead and plant the tree where it can grow freely.
X
This article was co-written by Maggie Moran. Maggie Moran is a professional gardener in Pennsylvania.
This article has been viewed 14,277 times.
Pruning hydrangeas is one way to help maintain their beautiful shape and encourage them to bloom profusely year after year. Not every hydrangea species should be pruned at the same time, so it’s important to know what type you’re growing before pruning. If you do this at the wrong time, you can cut off the next blooming season as well. See step 1 below to learn about when and how to prune hydrangeas.
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