Buffalograss decision: "If you want rock-solid proof, the book 'Waterwise Landscaping with Trees, Shrubs, and Vines: A Xeriscape Guide for the Rocky Mountain Region, California, and the Desert Southwest by Jim Knopf (Editor)' has various well-documented examples of xeriscape 'payoffs.' In some cases, you will break even in just a few years. I would consider this a sure-fire investment rather than an expense. If you install cheap lawn, you will be saddled with the negative economics of care, feed, water and waste."