Hello to all. I have a couple large trident maples that i want to do some work on the nebari next year, and am studying on approach grafting seedlings onto trunks. Does the seedling need to have newer growth? I have a 3 large tridents in the yard im growing out that i could air layer some whips next spring to use in the summer? Would that be a plan? or i have some cuttings i took this year that have just been planted after rooting. I could use them. Where does everyone get theirs from? Thanks.