I have a rather neglected apple tree that is infested with what I have just found out is woolly aphids. It is absolutely covered in them, and is really unhappy - it hardly flowered at all this year, and has no apples at all. What should I do to get rid of the woolly aphids, or is this tree beyond redemption?
I'd wait till later on in the year & give it a good seeing to witha winter tar wash that should shift most pests. 
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