answer:Do some research on Bonzai trees. They come from (Japan? China?) a country that had similar problems (lack of space), so they were bred as a way to have trees in a little amount of space. I know next to nothing about how to grow them, so I can’t give you much advice on that. But I know it has something to do with cutting the taproot to keep them small. Then, of course, you can bend them to grow in any form you desire. It’s more of an art.