W3rdSmyth

This isn't a question for myself, as I don't own any Japanese maples yet, this is a question for a friend.

He told me that he has several young Japanese maples that aren't sending out side shoots. He says they were collected from under a larger tree growing in the ground a few years ago, and he heard something about trees collected in this fashion lacking a certain hormone for branching properly but he can't remember what it was. There was supposed to be something that could be used on the trees to encourage this branching.

Does anyone know what he was talking about? He can't remember, and he'd like to do what he can to encourage side branching on his trees.

Thanks very much.

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