I hope I’m posting this in the right place, but I have a bit of a problem in my back yard. I have what seems to be a half circle of mushrooms in my back yard. There is a apple tree (or crab apple tree of some sort close by) and it almost seems like it’s to around the same distance away of three as the top canopy. Does anyone have any experience with what’s causing this and how to fix it? To my understanding, it’s caused because the roots of the tree are starting to rot underground and if not treated properly it can cause some serious damage..? Am I wrong? Am I right? Can anyone shine some light on this? Please and thank you!