I have a Bradford Pear tree in my yard with the trunk about 6" in diameter.
I have noticed that the bark is starting to seperate from the tree along the
bottom three feet. I can pull portions of it off easily by hand.. What
could be causing this and is there anything I can do to keep my tree from
dying?

Other than the peeling bark, the tree looks OK. It had plenty of leaves this
past year.

Gary