Between skyrocketing water costs and climate change, the idea that water could one day cost more than gas is a scary possibility. That's why more and more yardlings are opting to "X" out water use for good through xeriscaping. Companies such as AAA Landscape Specialists in San Marcos, Calif., have done more of these projects of late 'cause they require less water, maintenance and little (or no) lawn mowing while utilizing mulch to capitalize on rain water when it happens.