I need a drought and shade tolerant decorative plant (plants) for the south-facing front of my house in Tucson, Az. It will receive full sun all winter, but only indirect sun (and a little extremely early morning direct sun) in summer, because of the overhang of the eaves. I do not want to irrigate it because of the damage to foundations done over time by frequent watering of plants next to houses, and also just to conserve water. Another limitation is that there is a gravel walkway 33 inches from the wall, which runs the length of the wall, so the plant (plants) cannot be prickly or too large in diameter ( or must be able to be pruned on the side next to the walkway). I would like something that is about 3 ft. to 5 ft. tall, and will show up nicely against my cream colored house.... something with colorful blooms or striking foliage.