We have a large covered front door stoop that I would like to put container plants in to help fill it up. It gets no sun, southern facing, and is baking pretty much all day long. It is also a cement slab, which retains the heat. What plants would be good there? No cacti please. Ideally I would love to see some vines, something flowering, or trailing. Any help is greatly appreciated, I am a beginner at gardening.