You may think this is very odd (I don't blame you), but last autumn I tied a branch that fell off a tree (I think maple) back onto the tree. It was for a project I was working on. A little while ago I took it off and noticed that it had lots of leaf buds on it! It did not touch the ground at all and I didn't injure the bark either. How is this possible? When I saw this I tied it back on as best I could and it still has buds now. It is literally one dead branch tied to another (living) branch of the same tree...