Bermuda and zoysia sleep tan all through a Georgia winter and then, sometime in May, decide all at once to be green. GrassRoots Turf of Atlanta works to that clock — mowing at the height the grass wants, edging, and keeping growth even from the first flush of spring to the last cut of the fall. Stone Mountain sits on red clay under pine shade, two things that ask a lawn for patience. There is real pleasure in a stand of turf that closes ranks and holds one color from the mailbox to the back fence. The routes run from Stone Mountain through Tucker, Clarkston, Decatur and the east-side stretches of metro Atlanta.