When to prune philadelphus in the UK

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Philadelphus are an easy to grow shrub, there are about 60 varieties to choose from so they are sure to suit any garden. The most common variety, Mock Oranges, may need your attention soon. Here is an easy guide to pruning philadelphus.

In early summer philadelphus provide a beautiful display of blooms with their pretty white flowers and heavy scent.

These easy to grow shrubs can tolerate most soils so will cope in many gardens.

When should you prune philadelphus?

You should prune philadelphus immediately after they flower.

For most varieties, this will be from late July into August.

You will need to cut back to the good bud, cut back growth to the strong young shoots lower down.

You should usually remove about a quarter of the ageing stems near the base.

Pruning old growth is essential to promote new growth and maintain good plant health.

If your philadelphus has become overgrown you may need to prune it back hard.

Fortunately, philadelphus can tolerate hard pruning, but it may take more than one season for it to come back if you have had to cut back this shrub severely.

It should be noted to maintain plant health and appearance you should routinely remove damaged, diseased or dead wood from your philadelphus throughout the year.

Avoid pruning when the flowers are in season as this can stunt the growth of the flowers.

How to prune

Pruning is relatively straightforward, it simply means cutting out any damaged or dead shoots back to their point of origin or close to ground level.

You will need to hold your pruning shears at a 45-degree angle when you cut.

Make sure you remove a few branches from the middle of the shrub.

This will increase light and airflow to the centre of the plant to ensure continued plant health.

Remove any weak, spindly or twiggy shoots to ensure the plant concentrates its resources on producing new shoots, as these should produce the best flowers.

Make sure when you prune you use sharp, clean shears this will reduce the chance of your plant becoming diseased.

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