FAQ

In Lancashire, we saw a Prunus avium tree covered in a clingfilm-like web. What caused this, and what is the cure for the owners?

This is classic caterpillar infestation. Many organic or synthetic insecticides exist that would eradicate this problem. Any good garden centre would be able to advise. I prefer to use a pyrethroid-based insecticide against caterpillars. There is also a bio-control agent (Bacillus thuringiensis) that would prove effective. Again, I am sure this product is available in good garden centres.