Harold L. Lyon Arboretum

The University of Hawai‘i at Mānoa is one of only 32 institutions nationwide to hold the distinction of being a land‐, sea‐, and space‐grant research institution, and the only university in the United States that owns and operates a botanical garden in a tropical rainforest.  The Harold L. Lyon Arboretum is located on 193 acres in upper Mānoa Valley, O‘ahu, and maintains a world‐renowned collection of more than 5,000 plant taxa primarily from Hawai‘i, and the sub‐tropical and tropical areas of the world.  The plant collections are diverse, and include living specimens that range from common to extremely rare in their native habitat, as well as tropical ornamentals and economically and culturally important crop plants.