This plum tree was planted (along with its mate) about 7 years ago in my yard. I don't recall the variety but it once produced a lovely yellow fruit. Otherwise it has not produced. It flowers in spring, I prune it every late winter, and I'm not sure what else to do. The leaves curl and brown at the edges. Sometimes they all fall off precipitously. This year I noticed that the blossoms have all shriveled and fallen off after flowering. I experimented with moving my chickens away from the trees. I live on an urban lot in NE Portland and I keep under 10 hens and ducks. For a few years the birds ranged under the fruit trees. I wondered if their droppings were too much for the trees, so I re-routed the bird run so they don't have access to the trees. A year later, though, the blossom shriveling and leaf browning is still happening. And I'd love some fruit! Any ideas are welcome!