I have just returned home from a two week holiday to find the top of my lovely hawthorn tree bare! On closer inspection (well as close as I can get with a camera) I can see huge caterpillars munching through the leaves!! They are approx 3 inches long, fat and brown/light brown in colour and hairy with black heads!
Before I went away I had noticed a bare branch but thought little of it as I couldnt see any pests.
Help! What specials could they be and what do I do about it? I don't have a clear picture unfortunately so I can't upload anything helpful, but if someone could put forward some suggestions I would be grateful.