Back in May or June my two young dogs managed to strip the bark completely from the trunk of my dwarf weeping willow. The tree is about 10 years old and continues to survive. There are fine healthy buds on the branches at the moment and it kooks fine despite the fact that the trunk is bare. Ia there anything that I can paint onto the trunk that may save it or is it likely to die,sooner or later.
This helps to conserve the cambium, which is the slippery layer just beneath the bark, from drying out and dying.
It is possible that this may have survived in sufficient amount to allow the top of the tree to live. But it is too late now to do anything.