Up on the South Mountain ledges above Emmaus, ferns grow straight out of the rock in the hemlock shade — a stubborn green that hangs on where the soil is thin. Fernrock Landscapes Inc works the flatter ground below with the same stubbornness: weekly mowing through the long Lehigh County growing season, string trimming around trees and posts, edges cut clean along drive and sidewalk. Spring cleanup opens the beds; fall cleanup lifts the leaf fall before it mats down and smothers the turf. Nothing about it is complicated, and all of it shows. A yard that reads cared-for from the street is the whole point.