Listmania!
Arizona gardening handbooks
By an Amazon.com customer
Month-By-Month Gardening in the Desert SouthwestMonth-By-Month Gardening in the Desert Southwest by Mary Irish
Buy used from: $7.65
Great month-by-month guide, specific to AZ climate
Arizona Gardener's GuideArizona Gardener's Guide by Mary Irish
Buy new: $16.49 / Used from: $7.17
Climate map specific to AZ.  Good guide for high & low desert plants that will succeed
Plants For Dry Climates: How To Select, Grow, And Enjoy, Revised EditionPlants For Dry Climates: How To Select, Grow, And Enjoy, Revised Edition by Mary Rose Duffield
Buy new: $21.86 / Used from: $10.84
A winner when it comes to plant selection.  Followed their advice and did not go wrong
Desert Landscaping: How to Start and Maintain a Healthy Landscape in the SouthwestDesert Landscaping: How to Start and Maintain a Healthy Landscape in the Southwest by George Brookbank
Buy new: $15.61 / Used from: $3.19
Older information, good for troubleshooting environmental problems.  Lots of sensible advice
Desert Landscaping for Beginners: Tips and Techniques for Success in an Arid ClimateDesert Landscaping for Beginners: Tips and Techniques for Success in an Arid Climate by Arizona Master Gardener Press
Buy used from: $16.43
Good book for gardeners new to the desert... and gardening.  Explains the climate and seasonal patterns