summer volunteering in our orchard

 18th May 2026, will it rain or won't it? 

The weather forecast seemed unpromising, cloudy and rain likely in the morning. But the orchard trees were looking forward to a bit of TLC and we didn’t want to disappoint.

Eight volunteers arrived, ready to check tree health, to look for pests and diseases.

We looked for apple ermine moth caterpillars chomping away in curled leaves covered by their webbing. The webs protect them against any would-be predators looking for a meal of their own. We didn’t find any but will keep looking.

We looked for powdery mildew and found plenty. 

The volunteers will prune these and dispose of diseased leaves carefully, away from the trees, and clean the pruning tools to avoid spreading the disease.

photo A. Sheridan: powdery mildew

One volunteer spotted what looked like a small fluffy ball – a sign of woolly aphids. These are sap-sucking insects, hiding in cracks in bark or in old pruning cuts. When anyone picks at the fluffy featheriness you will find inside small purplish aphids.

Photo A. Sheridan: woolly aphid

Some trees showed signs of pests mainly at the top of the crown, with many leaves looking ragged due to holes and brown/ black spots round the edges. 

Two possibilities for this:

• Either caterpillars like Apple Ermine moth munching the leaves 
• Or Apple Scab which is a fungal disease. 

We’ll keep an eye on this. No photos as the leaves were too high in the crown.

While looking we also found lichen. Don't worry, lichen doesn't harm the trees. It is said that lichen is an indicator of good air quality. 

Photo A. Sheridan: lichen on apple tree