501(c)3 nonprofit, ArbNet accredited arboretum, promoting an active, healthy, greener, & growing MS! Old Mountain Arboretum’s mission is to advance the understanding, appreciation, and stewardship of native and non-native plants, flowers, and trees, Mississippi’s natural environment, and its unique and diverse outdoor beauty through education, conservation, economic outdoor development, the design of green spaces and unique outdoor activities. Old Mountain Arboretum is a 501(c)(3) nonprofit organization that relies upon the generosity and support of its members, donors, and the general public to pursue and support an active, healthier, greener, and growing Mississippi.