By late June the Deerfield River runs low and clear, and at dusk the fireflies come up out of the meadow edges by the thousand. Wildish Garden Co. tends lawns in that soft country — cutting to an even height, trimming along fence lines, edging where turf meets bed and path. Spring and fall cleanups handle each season's leavings; the summer weeks are simply mowing, done on time. There is something worth being proud of in a lawn that ends cleanly instead of fraying off into the weeds. Deerfield gives the grass every advantage, and the rest is showing up.