Maple is a tree or bush prized for its palmate foliage that takes beautiful autumn colours before falling and for an often decorative bark. The largest maples exceed 20–30 m in height, but many species and varieties have a smaller stature, of 5 to 10 m high, suitable for modest-sized gardens, such as Acer davidii ‘Viper’. Although hardy and low-maintenance, regular pruning helps control growth. Discover how to prune a maple in a few simple steps!

Why prune a maple?

Pruning maple controls shape and dimensions, prevents it from taking up too much space, encourages harmonious growth and helps prevent disease. By removing dead or diseased branches, you promote better air circulation and sufficient exposure to light, both essential to the tree’s vigour.

When to prune?

Maple should be pruned from October to December, during dormancy for a better view of its silhouette. It is best to work outside frosty periods and before sap rise begins. Do not prune after December, as sap rise is early in maple. You can also prune in June to help wounds heal quickly and to limit excessive sap flow. Formative pruning is required for young plants, then pruning every 3 years is sufficient to balance the branches.

How to prune a maple?

Formative pruning

When young, remove poorly placed branches and low branches on the trunk to raise the crown little by little. Cuts can be relatively light, generally not exceeding 20 to 40 cm.

Pruning a maple: when and how to do it

Maintenance pruning

One intervention every 3 years to balance the branches and keep a harmonious habit is sufficient. In general, the basic rule for pruning a maple is not to remove more than 15 to 20% of the canopy in a single season.

  • Inspect tree to identify branches requiring pruning.
  • Disinfect your tools with 90% alcoholC to avoid spreading disease.
  • Start by removing dead, diseased or damaged branches.
  • Prune crossing branches to improve shape and light exposure.
  • Make cuts just above an outward-facing bud to encourage outward growth.
  • Avoid removing more than a quarter of foliage at once.

You can also carry out so-called transparency pruning, a gentle pruning technique that preserves the tree’s natural habit. It’s an excellent way to highlight its silhouette and architecture! To learn more, read transparency pruning of trees.

Remember to disinfect cutting tools and ensure they are well sharpened!

How to prune a maple?

Required equipment

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