Hello everyone, I bought a coral bark maple about two years ago, but after this past winter, my tree doesn't look so good. I have searched online and I don't know what's wrong. I really love this tree and would really appreciate it if anyone can help me ID the cause of its decline. Last summer it was infested with cankerworms but I sprayed it with biological bacteria insecticides following the instructions and the infestation was solved. Then during winter, I did some minor pruning. This summer it doesn't look so good and it looks dead but I don't know why...I am watering it properly, and its receiving bright indirect sun from morning to around 5:00 pm, and direct sunlight from 5:00 pm to sunset. I suspect it may be some form of infection but I am not so sure. I am new to forums so, please correct me if I am making any mistakes. Thank you, everyone.