I have a few apple tress that have yellow and brown spots on all the leaves. See attached picture. Based on the pictures on this website it looks like Red Ceder Rust. There are no red ceder trees on my property and I don't see any on my neighbors property anywhere near the apple trees. The trees that get infected with this in the past have all died. I was wondering if you can confirm if this is rust, and what treatments I can do to the trees to try and save them. I