Spots on Leaves of Dwarf Cherry Tree
I planted a Juliet dwarf cherry tree last year. The leaves got infected with "Entomosporium leaf spot" (I think). I did remove all the leaves that fell on the ground and applied a GreenCure fungicide (active ingredient potassium bicarbonate) on a weekly basis.
This spring, I started applying the same fungicide from the moment the buds started to open out as a preventive measure. But it looks like the spots are back.
At the moment, most of the leaves are not infected, but I have a feeling they will increase in numbers. What should I do at this point? Is there a better fungicide?