Best way to label trees?
There was a post a while ago about how to permanently label trees; I simply cannot find it now. I remember one person said something about putting a nail in the trunk with a metal embossed label. At the time I really didn't realize how fast my trees were going to out-grow their metal tags put on with wire; now one of my apples has no label and I can't figure out what it is.
Any suggestions for permanent labels?