Successful plants and gardening techniques for your area Presenting a new way to think about gardening, the American Horticultural Societys smart gardening program teaches gardeners how to their own preferences and time availability, assess the possibilities of a location, and then create a garden that is in tune with the environment. A coding system, assigned to each plant, uses hardiness and heat zones, sunshade, water needs, and plant size to help determine the perfect plants for any site. Includes more than 3,000 plants that grow well in Arizona, California, Hawaii, New Mexico, and Texas.