Purple leaf plum - what is happening
We are new owners of a house (2 yrs) that has two Purple leaf plum trees. This summer, the leaves of the trees are showing a bad disease (I think). Can someone please tell me what this is ? A couple of Rose plants far away from the trees also shows similar manifestations. But strangely, they still flower.
The picture is attached. I also have another one and can click more if that gives everyone a better idea