Leaf damage on Newport Flowering Plum tree.
We bought our tree, a very young Newport Flowering Plum, a little over a year ago. As it began to leaf out, the leaves looked great, a rich burgundy-purple color. But, soon afterwards, holes appeared in the leaves, and they continued to deteriorate. We're not noticing any bugs or pests on the leaves, but something is obviously wrong. It is frustrating to see these nice leaves appear and then become full of holes. We are not experiencing any leaf-drop, however. Can You help??
Sounds as though your ornamental plum developed a fungal leaf spot disease. The diseased spots will fall out giving the appearance of a shot hole. Early fungicides applications using captan or immunox will help prevent this condition.http://plantdiagnostics.bugwood.org/level3.cfm?causeID=1375