Located in a transitional zone between the Sierra Nevada Mountains and the Great Basin Desert, the garden is challenged by a rugged climate. The garden has an average annual precipitation of 7 inches and a short growing season of less than 100 days. At an elevation of 4,600 feet, the gardens' daily temperature varies 50 degrees or more. Very few plants can survive in these conditions without human assistance. The garden's primary purpose is to research and demonstrate the botanical possibilities of the high desert environment. The arboretum has 12 acres covered with groves of trees, wetland habitats, outdoor courtyards, and secluded gardens.
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