Trees souls

I've been wondering, regarding to a tree's soul and life, say you cut the tree down yet it's still living when is the soul leaving that tree when it's cut from its roots in the Earth or when the trees completely been drained of life. I love my trees as I do all nature but wondering while seeing all these Christmas trees and as I'm speaking to them and telling them to hang in there and try to live as long as they can and thanking them for their sacrifice just wondering if the soul already passed or not.