I have a lacebark Chinese elm in my front yard that is at least 25 years old (it was here when we bought 25 years ago). I recently noticed after the freeze that the bark has split on a number of limbs and is peeling off in large sheets. There is some new green growth but probably not as much as usual. This tree also has "ball moss" in several places that has been there for several years. Does the splitting bark, etc., indicate the tree will die and I should cut it down?