Re: Maple Tree Issue
To an extent, the center of a tree is not what is "living". The nutrients are carried up through the part closest to the bark, so it can live just fine with this "dead part" inbetween the separated area. It's not as structurally sound per se, nor as attractive, but as long as pests don't take advantage of the weakness and bore holes and eat the wood, it's probably just fine. In the old days (according to what my grandpa used to do) people put tar on wounds like this but I don't believe it's recommended anymore, although I can't be sure.
Proud to be suburban free.