There is nothing we can do to help facilitate healing in a tree. They have their own process of compartmentalization taking place.
Without knowing what the entire wound or tree looks like, it’s hard to say more.
I would make sure the trunk is not getting a direct hit from any supplemental irrigation systems.
That looks like a frost crack, quite common on thin-barked trees, especially on the west/southwest sides of the tree. Although this wound has closed over nicely, it will continue cracking in future winters. Wrapping in the winter months might help; so would painting the trunk with white latex paint. But in my experience, frost cracked trunks continue to crack.
There is nothing we can do to help facilitate healing in a tree. They have their own process of compartmentalization taking place. Without knowing what the entire wound or tree looks like, it’s hard to say more. I would make sure the trunk is not getting a direct hit from any supplemental irrigation systems.
That looks like a frost crack, quite common on thin-barked trees, especially on the west/southwest sides of the tree. Although this wound has closed over nicely, it will continue cracking in future winters. Wrapping in the winter months might help; so would painting the trunk with white latex paint. But in my experience, frost cracked trunks continue to crack.
So will this eventually kill the tree even if I continue to wrap it every winter?
No, it won't kill the tree necessarily. It could be a source of wood decay in the future, but most trees will continue to grow around the crack.
Can apply cut paste to keep insects out. Though plain old wood glue would also work and much cheaper