What is wrong with my apple tree leaves?
I have a Cox's Orange Pippin tree and a Bramley Apple tree, and both of them are suffering from a disease/pest I cannot identify, so I don't know what to do to cure them.
Not having uploaded photos to this site before I do not know whether these have succeeded!
Is there a product I can spray on the trees to cure them of this, and if so, when should I do it. The problem does not affect the apples, which grow beautifully.