In July 2011, all of UC Davis' land-based operational units: the Arboretum, Grounds and Landscape Services and the Putah Creek Riparian Reserve merged to create the UC Davis Arboretum and Public Garden.
Now, the UC Davis Arboretum and Public Garden spans the campus’s 5300-plus acres and includes the historic Arboretum – a 100-plus acre campus and regional amenity comprised of demonstration gardens and scientific collections as well as the Putah Creek Riparian Reserve – a rare stream and grassland ecosystem managed for teaching, research, wildlife and habitat protection.