Sunday morning in Ormewood Park is about as still as Atlanta gets, no traffic on the side streets, mist hanging over the low ground toward Constitution Lakes, one mower running somewhere far off. Serenity Lawn Service tries to leave that feeling behind in a yard: grass cut even, edges drawn along the walks, trimming worked close around trees and posts, clippings carried off. Weekly and biweekly schedules run the length of the growing season so a yard never gets away from the household living with it. Autumn brings leaf removal and a thorough clearing before dormancy sets in. A calm yard is a small, genuine thing, and it is worth doing right.