How to winter wash trees

BBC Gardeners' World Magazine

Published: Wednesday, 9 January 2019 at 5:00 pm

Winter washing trees helps to control pests and diseases – we show you how to do it.

JanFebMarAprMayJunJulAugSepOctNovDecTo Doyesyesyes

Save

Winter washing fruit trees involves spraying them with a mixture of plant oils diluted with water – you'll find the concentrated solution in garden centres.

Spraying in this way can help control pests and diseases by knocking out overwintering eggs, removing debris and reducing fungal spores. It's especially useful for controlling aphids and woolly aphids on fruit trees like apples, cherries and plums. However you may also remove overwintering aphid predators such as queen wasps, as well as other hibernating wildlife.

Follow our guide to winter washing trees, below.

You Will Need

Winter wash solution
Measuring jug
Pressure sprayer
Soft brush

Total time: 45 minutes

Step 1

Diluting the winter wash solution

Read the directions for use to get the measurement for the concentrate right, and pour it into the sprayer.

Step 2

Adding the solution to the pressure sprayer

Add the right amount of water to dilute the concentrate and shake to mix it well. Wipe up any drips from the outside of the sprayer. Prepare to spray on a dry, still day.

Step 3

Spraying the wash into bark crevices

Spray the wash into all the bark crevices around buds and the joints of branches. If necessary, use a soft brush.

Safety first

Wear protective gloves and goggles winter washing your trees, and avoid breathing in the spray.

24467

Plants to winter wash

Don't miss out this Winter

Enjoy expert advice on what to plant and grow this winter, and how to prepare your plot for the year ahead. Enjoy, 6 months for just £31.99

Subscribe now

Great gardening savings - straight to your inbox

Sign up to the BBC Gardeners’ World offers newsletter for exclusive deals, seasonal savings, and early access to special promotions.