Sasaki Associates designed the original master plan of the Arboretum in 1990.  It called for 26 major regions including a Woodland Habitat, a Savannah Habitat, and a Prairie Habitat. Dedicated in the fall of 1994, theHartley Selections Garden launched the Arboretum, a gift of faculty member Miles C Hartley.  At the front of the path leading to the Gardens, the Welcome Garden makes new visitors at home. It was a gift of the Noel Family and is dedicated to Roseanne Noel's grandchildren.  Nearby the Hartley Gardens is the Idea Garden , a set of 6 plots maintained by Master Gardeners of the Champaign County Extension Unit. 
The Bee Research Facility is also located on the grounds of the Arboretum.