Grass under Tenafly's old canopy is a particular problem and a particular pleasure: half a yard in full sun, half of it in the cool shadow of maples that stood tall before the driveways were paved. Latz Landscaping reads a lawn the way you would read a room, setting the cut height for what the light actually gives, then trimming out the awkward corners a deck rides over. September is the good month for it — the air turns clear, the town greens up again after August, and a mown lawn near Roosevelt Common looks the way lawns look in a memory. The work is the weekly kind: mow, trim, edge, blow the clippings off the slate, leave nothing behind but the smell of it. Twice a year the cleanups come, beds opened in spring and the leaves lifted in late fall. Nothing showy — just a yard kept in good order until the whole block seems to sit up straighter.