Wondering what type of anyone can tell me. The problem I have is in my new home it’s planted next to a small oak tree and they are about 5 1/2 feet apart from one another in the front yard. If it will stay small I will leave it because it’s gorgeous. If not I will have to move it to the backyard. I know there is dwarf versions and diamond backs that are smaller but I can’t tell the difference. Thanks.