Two roofs on the campus of the University of Arkansas at The Gardens, the tailgating area adjacent to Lot 56, were greened by Mark Boyer, associate professor of landscape architecture, and assistants on October 17, 2006.

According to The Arkansas Traveler Online(2007), “The aim of the project is to determine what type of plant and soil – if any – will survive the Northwest Arkansas climate,” and referring to the test research, “The group is using three different types of soil: small shale pebbles mixed with clay; larger pebbles mixed with clay and mushroom compost; and smaller pebbles with clay and compost.”