When the pecan groves in the Mesilla Valley take their summer water, the whole bottomland goes cool and loud with it, and the smell of wet ground carries for a mile. Grass Masters, LLC works the yards in and around La Mesilla in that same green corridor — mowing on a regular turn, cutting back the fence lines, edging along drives so a lawn keeps a defined border against the caliche. Valley grass grows hard in July and August, and the trick there is frequency rather than force. They keep the visits close together and the height right, so turf stays thick instead of scalped and stressed. Come evening, when the Organs go copper above the east side of the valley, the lawn is the coolest thing on the property.