All plants need water to survive. However, like plants that require more water, there are plants that grow in a lack of water. Check them out.
Make A Bee Waterer And Help Hydrate Our Pollinators | NewsLinQ
Downloadable xeriscape designs. Colorado State University also have some downloadable plans.
9 Fabulous Xeriscape Ideas
Texas Lilac (Vitex). They are hardy, drought tolerant, and the butterflies
10 Grassless Backyards - Sugar and Charm - sweet recipes - entertaining tips - lifestyle inspiration
Clever xeriscape idea.
Succulent Gardening Archives - My Garden Your Garden
drought-resistant plants are staged around boulders that help block runoff after storms