I have a two-year-old apricot tree about six feet tall growing in a salvaged water tank. Many if not most of the leaves have one or more of little "blisters" on their stalks, as shown below (each blister is about a millimeter across).
Is my tree diseased? Can I cure it?
I don't know if it's related, but there are several blobs of clear sticky resin on the main woody stem / branches (some up to the size of a small marble).