Located at 2150 N. Alvernon Way. This collection of gardens includes a xeriscape demonstration garden, an historic Tucson garden, spring wildflower garden, tropical greenhouse surrounded by fruit and shade trees, and an iris garden. The gardens are landscaped with more than 500 different native desert plants, herbs, and flowers. Tours and classes are offered. Special events include Fiesta de los Chiles, Luminaria Night, and Home Garden Tour. Call for dates. Admission fee.