I used to work at the Water Conservation demonstration garden. We bought a lot of our plants from Glover's Nursery. They have a lot of plants that you may not find at other nurseries. They have a good sized selection of drought tolerant plants. The areas are well organized. It is helpful to know the botanical names of the plants you are looking for as some sections are organized alphabetically by that name.
They also have a water garden demonstration area, with gifts for sale. They offer all gardening supplies and also have a landscape consultant program.
This is a great nursery to look for good, healthy plants.