Edible shrub or small tree for foundation planting?
I'm looking for a small tree(s) or shrub(s) which can be trained to grow against the wall of my porch. Maximum height is 5-6', width about 7-8" and depth about 2' ish. I can provide support or it can be free standing. A twining vine would be okay if it can be controlled -- in our sunny climate a lot of plants tend to go wild and try to take over. The location is south facing, gets intense full sun and lots of heat and humidity. In the winter it will also be getting the brunt of the wind and weather, so sub-tropicals are out.
I don't mind pruning once or twice a year. I do want it to have some winter form, not die back to the ground.
I already have blueberries and rosemary elsewhere, and I'll be pulling out a very ugly and neglected rosemary shrub in that spot anyway. I think the location may be too hot for bush plums. Any other ideas?