We've been in our house for about 18 months and inherited some pretty straggly damson trees. Last year we got LOADS of fruit - more than I knew what to do with. This year I think I've seen one fruit. We haven't done anything with them (the shame!) - no pruning, feeding or anything but I'd guess they're pretty well established. The house was empty for 4 years before we moved in as well, so they wouldn't have had any care in that time, and yet they fruited well last year. Any ideas?