Japanese maple rust?
I have an amazing Japanese maple tree in my front yard. It's about 20 feet tall and 15 ft wide, I recently noticed that almost all of it's leaves have developed one or two white spots on them. They look similar to an apple rust scab, and the tree happens to be right next to an apple tree infected with apple rust. Do the diseases carry over to neighboring trees? What can I do to make it better? The maple leaf spots look sort of like a tiny bird pooped on each of them by the way.