Morning off the Sound arrives soft and salt-damp in Darien, and the light has to travel through oak crowns and old stone wall before it ever reaches a lawn. The Growing Concern does its work in that light — mowing and spring and fall cleanups, sod and hydroseeding where a lawn needs starting over, tree planting and garden beds, landscape design and installation, and masonry that becomes a patio, or a retaining wall holding a slope steady above the Goodwives. There is a plain, physical satisfaction in a clean edge along a drive, in turf that comes in even and green all the way to the wall line, in fieldstone set so patiently it looks like it was always there. Across lower Fairfield County, the result is measured the same way every time: a yard that reads well from the road and better still from the back steps.