When to prune acers

Last Updated on 22/04/2021 by Esther Roberts

The best time to prune acers is when they’re dormant during November and December. But it doesn’t hurt to brush up on your knowledge to ensure you’re ready for when the time comes. The reason we prune acers whilst they are dormant is due to the sap they bleed when pruned which weakens the tree. It is also best to keep the pruning to a minimum as to keep the natural shape of the tree.

Acers are a great addition to any garden, and make an amazing centre piece for any garden. With leaves that turn beautiful shades of red, crimson, orange or yellow in Autumn. As slow growing and compact plants, acers are especially great for smaller gardens.

One thing to be aware of when planting acers is that they grow best in a sheltered position, and need to be protected from wind and frost.

How to prune

In order to keep this natural shape start by removing the badly-placed or crossing shoots to encourage the natural framework of the tree to grow. When reducing the width and height follow the long branches back to the side branch and prune.

Why we prune

Pruning is much more than sawing off branches. Pruning encourages growth, increases flowering and improves overall plant health. Here are a few others reasons to prune your trees:

  • Strengthens tree structure
  • Improves tree health
  • Reduces the risk of dead or weak branches

Important Notes

The key to making sure your acer continues to grow steadily and healthily is to only prune back to a well-placed side branch. Leaving it as a stub will make it susceptible to decay and dieback. Also remember to take out any dead, damaged or diseased wood.

Whether your acer is the main garden event or just a beautiful addition, keeping on top of its maintenance can ensure that it will take centre stage.

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