I bought a Japanese Maple several years ago and it was very small , it seemed to be doing very well over the years until last early summer suddening all the leaves just dropped off and never came back, this week only a few leaves have come back at the bottom branch, and it was so lush before! really breaks my heart..don't know what happened to avoid this in the future if I need to come up there and replace the tree? Should I put it in a different spot? It was in the back yard where it had plenty of sunshine but last spring we had sooo much rain (ruined my tomatoes)could it be that? I so want another one if it's too late for this one but need advice. Thanks!