I have a small Serviceberry that was planted last Fall and is growing well,but has developed spots on the outer edges of some leaves.Has anyone seen this before?Is it rust?Thanks for any info. Brady
My guess would be Entomosporium leaf spot, but I'm not a plant pathologist.
I've probably seen it on mine, and not really paid any attention to it. Majority of leaf mass looks fine, I doubt that it's causing any significant issue for the plant.
The way that pattern squiggles around, leaf miners are a possibility.