thanks for all the advice, the oranges are delicious and i've never taste any as good as these. When you say purchase a tree to use as root stock to graft onto what type of tree? how old and how big should it be? The oranges on this tree, have a peel you can get off all at once. I think it may be a tangerine? Its very sweet. It was planted over 30yrs ago. Oh and i'm in Lafayette Louisiana