I have a relatively young pear tree but for the second year in a row the leaves are covered with these black blotches and this year some of the leaves are disfigured (distorted curling). Is this scab, and if so is there anything I can do about it?
I have two other trees, plum and apple and they seem to be fine and have indeed flowered this year (so expecting lovely fruit from them for the first time) but my pear tree hasn't so much as had one flower. Is there anything I can do?