My question is a bit different because I'm leaving the oak tree in the ground where it started growing about 5 or so years ago. I've been trying to keep it cut back each year to try to make it into an interesting looking bonsai-ish tree. I'd like to add a picture for you to see so that you can help me. I don't know how to go about cutting it back. I think I've been doing it wrong and would like to know if I can salvage it.
The oak tree is to the right of the red flowers on top of the large spiky leaves. To the right of the oak tree is a taller butterfly bush. The butterfly bush will be cut down if I can get the oak tree to look nice. If anyone can help with shaping it I would appreciate the help. If you need more pics please let me know.