The 6-acre Clarence E. Lewis Landscape Arboretum, designed as an instructional arboretum for students in landscape horticulture, offers visitors a chance to observe ornamental trees, shrubs, ground covers, and perennials in landscape settings.

The site had its beginnings as the old campus nursery and as a result many remaining specimen trees lend a mature appearance to much of the arboretum. The arboretum continues to grow, providing learning opportunities for students, industry professionals, gardeners and community members.

The Mawby Fruit Collection features tree and small fruits grown in Michigan, in addition to a demonstration of training systems for dwarf fruit trees and grapes. The new central court garden, the first of many planned landscape demonstration gardens, features creative combinations of trees, shrubs, perennials, retaining walls, and paving.