We purchased this pink dogwood last spring/summer. It is planted in a site that gets half a day of sun (afternoon) and gets watered regularly. This past winter was quite harsh and there was some branches that did not grow new leaves. I assumed that it was just winter kill and cut out any dead branches. Subsequently, a couple more branches have died off. The leaves and flowers start to wilt and then dry up. Not sure what is going on with this tree, but I would love to save it, if it possible? Any information would be great.