What to do with my backyard ?

My backyard is all cemented. What ever I grow dies because of heat. Heat from the ground and the back of my house and the back of my garage. I have sider plant and a pine little tree. Every plant is off the cement and not directly put down on the ground. I can not break the cement. I have a canopy only in the summer time and this helps. I'm sad to look outside to my backyard.