Pondless Backyard Fountain Pond and Waterfall. Even without the fountain, which in Az will grow algae like nobody's business, I think the idea of softening up the patio with a little rock garden with plants mixed in.
Example for an herb spiral. The principle: plants, best tolerate drought, get to the top - moisture-loving plants at ground level. Spiral clockwise in the northern hemisphere to work with the natural flow of water.
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