After a large maple tree limb was removed to the tree, the area is rotting. Is it OK
We have a large beautiful maple tree in the center of our back yard. Several years ago the local power came through and cut one of the large limbs close to the power line clear to the tree itself. Since then in the years since, the spot has rotted and is not receding into the tree mostly because of it holding water from rain. We have had several suggestions on what we should do. One is to drill a hole farther down in the tree so the water will run out and not remain in the rotted area to stop it from continuing to rot. The 2nd was to let it dry and then fill it completely with concrete. The people who did the cut say not to worry about it. We have recently built a deck and sliding doors off the house and do not want to lose the shade or the beauty of the tree. What is the best way to keep this tree? We do not want to lose it at any cost. Thank you