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The arboretum was established in 1985, and includes all of the landscaped areas of the entire 335-acre (136 ha) campus. The arboretum's missions are to display mature plants suited for high desert conditions, and to investigate new plants and cultivars. The arboretum also includes a 2-acre (0.81 ha) Xeric Garden, established in 1988 and located at the entrance to the Marjorie Barrick Museum, which contains plants from arid regions from around the world.
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