A comprehensive guide to gardening in the Northwest -- includes Alaska, Colorado, Idaho, Kansas, Montana, Nebraska, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming. Presenting a new way to think about gardening, the American Horticultural Society"s "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, sun/shade, water needs, and plant size to help determine the perfect plants for any site.