One of my 4 green ash trees is starting to drop leaves....not seriously so...
One of my 4 green ash trees is starting to drop leaves....not seriously so far. However, most of the remaining leaves have yellow spots as shown in the photo. Leaves on the ground are bright yellow and have brown spots. I'm unable to upload more than a single photo. Do recognize this disease? Can it be treated? If so, with what?This is a young tree ~15-20' tall and can be easily sprayed with fungicide or other remedy.
This looks like anthracnose. http://extension.umd.edu/learn/shade-tree-anthracnose
Our plant pathologist does not recommend spraying with a fungicide due to the fact that anthracnose is a trivial problem compared to the impending problem of emerald ash borer. Please be aware of the emerald ash borer which has not been reported on the Eastern shore YET. http://extension.umd.edu/hgic/invasives/emerald-ash-borer The odds of the emerald ash borer getting to Kent County are high enough to consider planting another tree especially if you have enough space. vw