UConn’s Arbor Day Celebration is sponsored by the Office of Sustainability (OS). For 2021, the OS’s annual large-scale Earth Day Spring Fling event had to be cancelled, but the OS still hosted its Arbor Day Celebration through the annual Class Tree Planting event on April 30, 2021. In observance of Arbor Day and in commemoration of the Class of 2021, a Saucer Magnolia was planted on the south side of the Wilbur Cross Building.