Native Plant Society of Texas
The Native Plant Society of Texas provides a Web site (www.npsot.org/) that contains an extensive list of the state's native plants, alphabetized by genus and species. (Unfortunately, the list doesn't provide further detail about the plants growing and cultural requirements.) Other useful information it offers plant lovers includes environmental updates on legislation related to endangered species, a book list specific to regional plants, an events calendar, and links to similar sites.
Desert Landscaping: Plants in a Water-Scarce Environment
Desert Landscaping: Plants in a Water-Scarce Environment, by the Arizona Water Resources Research Center (1998; $25), is a terrific CD-ROM that helps gardeners select from over 600 low-water-use plants. You can search by plant name, look at award-winning landscapes, and compare characteristics of similar plants; or use the plant selector to click on characteristics you need, and the database will provide appropriate plants. The database covers plant size and growth rate, soil and sun requirements, irrigation needs, place of origin, allergens, wildlife interactions, color photos, and more.