What to prune in winter?

Description

DISCOVER THE PLANTS THAT SHOULD BE PRUNED IN WINTER…

Many trees and garden plants benefit from pruning. They become dormant as a result of seasonal changes in temperature and outdoor conditions and once the leaves have fallen it’s easier to see a plant’s framework. But it’s important to prune at the right time of the year and in the right way.

The aim of winter pruning is to encourage healthy growth, cutting and reshaping so that fruit trees remain productive and shrubs don’t overgrow their space. Winter is the time to prune your roses, cut back clematis and reshape fruit bushes and trees. It’s also a time to revive plants that can become large and unproductive, such as viburnum and mahonia. Anther benefit to pruning in winter is to help control or prevent the spread of disease.

Secateurs, loppers, folding pruning saws and pruning handsaws will enable you to tackle a wide variety of jobs.

REMEMBER THOUGH… Not all plants are suitable for winter pruning. Some plants should be pruned in spring, while others are best left until summer or autumn. Check out our ‘what to prune in’ guides for other seasons.

Fruit Trees – Apple and Pears

Apples and pear trees should be pruned from November to mid-March to encourage fruiting. Pruning will help encourage a good crop by enhancing energy into the remaining buds. Aim to create a wine-glass shape, with evenly spaced branches rising up from the trunk in a circle around a hollow centre. Cut off any shoots at the base and remove dead, diseased or crossing branches.

Do not prune stone fruits, such as cherries or plums, in winter as they risk being infected by a fungal disease called silver leaf. Prune them in early or mid-summer instead.

Roses

Cut back bush and climbing roses hard in late winter to promote healthy growth, flowering shoots and plenty of blooms in the summer. Many types of rose can be pruned in winter, including floribundas, hybrid teas, shrub trees and climbing roses. Rambling roses should be pruned in late summer, but can be renovated in winter. As a general rule, cut back thin, weak stems the most, and thick, vigorous stems the least. Aim to leave plants anything from 15cm to 45cm tall, depending on the original size of the plant and your preference.

Shrubs

Deciduous shrubs should be pruned in winter, particularly those that grow too big for their allocated space. Renovation pruning will revive plants that can become large and unproductive, such as cotinus, berberis, flowering currants and magnolias.

Fruit Bushes

Fruit bushes, including blueberries and blackcurrants, gooseberries and redcurrants should be pruned in winter. As a general rule, remove some old wood each year, creating a goblet shape, leaving healthy young branches that will produce large crops in years to come.

Grapevines

Grapevines are woody, deciduous plants, which ooze sap, or ‘bleed’ when they’re pruned. If cut stems bleed it can weaken the plant, so it’s important to prune them in mid-winter, when they’re deeply dormant. Other plants that bleed when pruned include acers, birches and figs. Prune in December or January, by cutting back to a main ‘rod’, or arm, that’s trained out vertically along support wires.

Wisteria

Wisteria should be pruned twice a year, in December and again in summer, to keep it in check and promote flowering. In winter, prune all side-shoots back to three or four buds. Then after summer flowering, cut back all whippy shoots to 30cm, depending on the original size of the plant and your preference.

Ornamental Trees

From November to March, remove smaller branches from ornamental trees to create a clean, bare stem at least 90-120cm tall. Remove branches that impede access or block mowing, but cut sensitively, thinning out rather than chopping back the whole canopy.

Clematis

There are varying categories of Clematis. Group 3 clematis flower in mid-late summer and require pruning in February. Prune in February by cutting the plant down to 10cm above the ground to remove long, old growth and encourage strong flowering shoots. Cut back Texensis and viticella hybrids to ground level before new growth emerges. Most other groups of clematis only need a light tidy up after flowering.

 

This guide is intended to give information and advice only. It is the user’s responsibility to ensure necessary training and experience is achieved to use a pair of secateurs and pruning tools safely.