I have been training a vitex tree as s standard. It has grown well and fast, until I noticed this rot/scar. I had tied the tree to a pole. It is located in a very windy path and I suspect the rubbing against the pole has done damage to the trunk. What can I do to save it? The tree is not longer tied to the pole and when soil is soft enough it will be removed. Thanks in advance for your help.
First pic is overall tree. Second pic is a closeup of scar. About 1" of cambdian layer is exposed.
