The Gardener's Guide to Cactus: The 100 Best Paddles, Barrels, Columns, and Globes 
by Scott Calhoun
Timber Press | January 2012 | ISBN-10: 1604692006 | ePUB/PDF | 22.7/33.6 mb 
http://www.amazon.com/The-Gardeners-Guide-Cactus-Paddles/dp/1604692006
PDF conversion is mine.

At last: a book that shows readers just how easy, hardy, and rewarding cactus can be for everyone ΓÇö not just specialists. Succulent plant expert Scott Calhoun picks 100 of the best cactus available and shows how they can make striking additions to your garden or serve as dazzling container specimens.
Whether you want striking form, gorgeous flowers, or a low-maintenance plant for a spot that needs little or no supplementary water, you'll find it in this friendly, informative, eye-catching guide.

-    Detailed descriptions of the 100 best cactus for gardens
-    Stunning photos
-    Expert advice on planting and care
-    How to show cactus
-    Tips for growing cactus in containers
-    Best tools and planting media
-    How to identify and avoid pests
-    Helpful lists of spineless, culinary, and scented cactus

About the Author 
http://g-ecx.images-amazon.com/images/G/01/ciu/1b/03/4b58635c88fa0ad8986c71.L._V175337520_SX200_.jpg
Scott Calhoun is the author of six books about plants, gardens, architecture and food. His first book, Yard Full of Sun, received the 2006 American Horticultural Society Book Award. His second title, Chasing Wildflowers, was awarded the Garden Writers Association 2008 Silver Book Award. Scott is a Contributing Editor to Horticulture magazine, writes a monthly garden column for Sunset magazine, and freelances for numerous print publications including, American Gardener, Fine Gardening, and Wildflower. Based in Tucson, Arizona, Scott lectures and designs gardens across the United States.

CONTENTS
Introduction
Planting and Care
Cactus Planted in the Ground
Cactus in Containers
Showing Cactus
Tools of the Prickly Trade
LOW AND MOUNDING CACTUS
Hedgehog Heaven
Charming Claret Cups
Beehive Brilliance
Hooked on Pincushions
The Great Chihuahuan Nipple Cactus
BARRELS AND GLOBES
Stars of the Garden
Hail to the Woolly Topped Barrels
Fear Not the Ferocious Barrels
PADDLES AND RODS
Chollas by Choice
Prickly Pear Passion
CONSPICUOUS COLUMNAR CACTUS
CACTUS PESTS
CACTUS FOR SPECIAL PURPOSES
SELECT RETAIL CACTUS NURSERIES
PLANT HARDINESS ZONES
Bibliography
Index