I live in a suburb of Chicago, Illinois and have a small back yard, just the width of the house. I'll be digging up an old rusty basketball hoop this summer and would like to plant a tree in its place. My ideal tree would have small leaves (for dappled, light filtering shade) no fruit, a contained root system so that it doesn't burrow into the sewers and cause problems, and not grow taller than my 2-story house. Does such a tree exist that would grow well in my area? I'd appreciate any ideas. Thanks!