A primary goal of establishing a campus arboretum is to promote biodiversity. We aim to represent the native plants of the Tucson basin but also actively introduce arid‐adapted plants from all over the world. The microclimates in our urban setting provide shelter for many unique specimens and afford opportunities to contribute to the biodiversity of a healthy ecosystem.
Many of our trees have special status. The University of Arizona has 20 Heritage Trees, with special significance to UA history and 10 trees designated as Great Trees of Arizona. Great trees don’t have to be native to Arizona – just stately and beautiful. This Chinese pistache (Pistacia chinensis) by the Communication building is one of the 10 Great Trees of Arizona.