Saturday afternoon on the east side of town, the air over the pavement wobbles and every third house has a trailer parked out front. Rosas Landscaping and Lawn Care is one of them, moving through mowing, edging, string trimming, bed weeding and mulch, shrub trimming and haul-off, one address after another until the light turns amber. Alpharetta summers demand that pace, since the grass will not wait and neither can the schedule. The last thing done at every stop is the blower, because a clean walk is what the customer actually sees first. Duluth, Johns Creek, Norcross and Roswell round out the map.