The Pima County Master Gardeners are pleased to announce their 20th Annual Home Garden Tour. Art in the garden and creative design ideas will be on display in four fantastic midtown Tucson gardens. " Water Wise" is the theme this year with Master Gardeners leading discussions at each of the homes on the tour. Learn different ways to make the best use of this precious desert commodity. Active and passive rainwater collection, xeriscape principles, and how to select native and desert adapted plants are some of the topics to be covered. Garden histories as well as comprehensive plant lists will be available at each garden and on line. The Demonstration Gardens at the Cooperative Extension will also be open for touring.