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Tree Pruning: Why, When and How?

Tree Pruning: Why, When and How?

Exterior renovationsTree Pruning: Why, When and How?

Delighted to see that your small tree has finally grown? As gorgeous as it is, with its branches throwing caution to the wind, your tree roughly swaying in all directions may not be as safe as you believe.

Do the branches of your tree mean danger or do they just make it look shaggy? It’s high time to consider these questions and prune your tree. To work safely and efficiently, read on!

What’s pruning and why is it necessary?

Source: Canva

In short, pruning refers to trimming away loose branches. This trim is aimed at getting rid of branches that are harmful for one reason or another. Let's start by mentioning the first branches to be cut should be the broken ones. Since they continue to absorb nutrients, trimming these transfers nutrients to viable branches.

Plus, a damaged branch is a gateway for both fungi and insects. By cutting it away and allowing it to heal, you can avoid the development of an infection that can be fatal in the long term.

If you find areas of your tree to be quite dense, these should also be pruned. This is because too much branch density prevents air circulation, and this tends to create the proliferation of insects as well as the growth of fungi. Therefore, if there are too many branches, the situation will need to be dealt with. 

In a completely different vein, know that trimming tree branches can also be carried out for purely aesthetic purposes. If you’re particularly concerned with your tree’s appearance, trim any small branches that make it look sloppy. Finally,  some branches should be trimmed for safety reasons. For example, to prevent them from touching the roof, electrical wires or simply to prevent them from falling during unpredictable weather.

The rules for tree pruning

As mentioned, trimming a tree needs to be done by following several rules, as this allows the tree to heal properly. First, let's emphasize that it’s important to minimize the amount you trim. The more a tree is pruned, the more it’s weakened and therefore, at risk of falling prey to fungi and insects. As a guide, pruning should never exceed 25% of the branches.

Also, keep in mind that you should never prune more than a third of the green branches. If you bend this rule, your tree will be unable to photosynthesize well enough to grow in both height and in diameter.

Next, remember that pruning should only be done once per season to allow your tree time to recover. Finally, we should note that the best option is to trim branches before they reach a 3cm diameter, as this will allow them to heal quickly. Early pruning is the best way to respect the growth of the tree.

For proper pruning, be sure to use a saw if the branch diameter is greater than 25 millimetres. Otherwise, curved pruners or shears are appropriate. Before you begin, make sure your tools have been recently sharpened.

When to prune your tree

Source: Canva

It’s possible to prune your trees throughout the year, unless they’re producing edible flowers and fruit or if the work you’re taking on involves trimming over 20% of the tree’s surface area. In this case, it’s better to wait for the dormant growth period, and this would be either winter or at the very beginning of spring.

Obviously, the extreme cold of early winter months like January and February can greatly complicate executing this work. Not only will it be cold, but wind, ice and accumulated snow can be a significant stress and potential safety threat.

However, whenever possible, it’s also preferable to avoid pruning during the period of sap build-up (which occurs towards the end of winter and marks the restart of a tree's metabolising process) This is when a tree leaves its dormant state and thus, it’s particularly important for its growth.

What about those with an apple tree? Prune your trees in early spring to make sure there’s enough sap inside to ensure an excellent apple harvest.

How to prune a tree?

Source: Canva

Here’s where we should underline the difficulty posed by pruning a tree: the trim must be carried out as close as possible to a regeneration zone (this is the zone containing dormant buds). Otherwise, the tip of the branch (the snag) will dry out, and this will make healing impossible.

In fact, a dry branch creates an opening through which insects can enter. Over time, degradation of the tree’s interior can eventually lead to death. If you accidentally trim too close to the trunk, you’ll only widen the wound, which interferes with the natural healing process.

Finally, don't forget to say that it’s absolutely necessary to remove any damaged bark with a wood chisel, sanding the surface of the wound.

Do you have the consent of your neighbours?

If the branches of a neighbour's tree encroach on your property, it’s crucial to ask their permission before starting to trim away, even if the work is urgent. What if your neighbour doesn't give you permission? You’ll likely have to prove in court that the branches you want to remove do indeed pose a danger or constitute a nuisance.

Be sure to send your request in the form of a formal notice so that you can prove your neighbours been informed of your desire to carry out the pruning work.

Caution

Before even thinking about pruning your trees yourself, you should know that if the branches you need to trim are less than three meters from electrical wires, only your hydro company or a professional pruner can carry out this work.

Get quotes for your exterior renovation or landscaping project

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Dial 1-844 828-1588 to speak with one of our customer service representatives.

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Last modified 2024-03-26

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