Whitman's landscaping team, led by supervisor Bob Biles, continuously seeks out means for reducing Whitman's ecological impact while improving its appearance. Current practices include using growth inhibitors on athletic fields to reduce need for mowing, minimal fertilizer use, transitioning to organic fertilizers in select locations, and a newly redone sprinkler system to efficiently water our grounds. The growth inhibitors on the athletic fields are estimated to have reduced mowing one third, eliminating the need for fifteen gallons of diesel fuel each week. Organic fertilizers will be utilized in landscaping surrounding Penrose Library, Reid Campus Center, and Baker Alumni Center. By refitting sprinkler nozzles, a 20% water reduction is expected. Some environmentally conscious features can be found around campus, too. On the northwest corner of E Isaacs and Penrose is the xeriscape water-wise garden. Whitman's edible landscaping garden is located east of Maxey, entering the amphitheater. Lakum Duckum is not heated, but is instead kept warm during the winter thanks to the warm spring that feeds the campus well.