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Woolly aphids

Symptoms

Congregations of fluffy, white, waxy aphids cause localised swellings on branches. If the swellings split open in winter, infections can set in.

Find it on: apples, crab apples, cotoneaster, hawthorn, pyracantha, sorbus
Time to act: all year round

Overview

White, waxy, sap-feeding aphids colonise cracks, crevices and pruning cuts on the bark of apple trees in the second half of spring. They then spread to new growth and create soft swellings. If the bulges split open in frosty weather, infections, such as canker, can set in.


Solution

Congregations of fluffy, white, waxy aphids cause localised swellings on branches. If the swellings split open in winter, infections can set in.

Organic

Blast off the fluffy, sticky aphid mass with a high-speed jet of water. This won't cure the problem long-term but deals with the aphids in the short-term.




Discuss this problem

Talkback: Woolly aphids
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ILOVEBEES 24/11/2011 at 15:29

Before using thiacloprid, imidacloprid, acetamocloprid or any other neonicotinoid pesticide, I recommed visiting the Buglife website, to read their report summarising independent research on neonicotinoids. They kill bees & other non-target insects - eg. butterflies etc. Miniscule amounts impair the ability of insect to function resulting inevitably in death. Also, seek out the fact sheets from the US environment agency -you may get a shock! We used to manage without them & can now.

LucyG 05/09/2012 at 15:42

I have two apple trees that are not producing fruit - and appear to be really failing. I have noticed small very light green flies on the back of the leaves that appear almost to have fine silk threads stretched across them on the leaf They do not look like the clusters of woolly aphids I see but the leaves are turning brown.