Another great book

Lately, I've been referring to this book quite a bit for research on a project in a Mediterranean climate: The Dry Gardening Handbook: Plants and Practices for a Changing Climate

It's a terrific resource, with concise, easy-to-find information on various plants for xeriscaping. What I like best is he applies a drought tolerance key for each plant. 1 means that the plants can sustain without irrigation for 1 month, 2 for 2 months, etc.