On an August morning the damp air drifts up out of the Great Swamp lowlands toward Harding and hangs over Madison until the sun burns it off, and for an hour every lawn in the borough is silver with dew. Pacific Lawn Sprinklers Saddle River NJ works with that green while it lasts — mowing, trimming, edging along walks, mulching beds so the moisture stays where the roots are. Late summer is the real test of a lawn, and one that holds its color through the dry weeks is worth the trouble it takes. Cleanups come around in spring and fall to reset the ground on either side of the season. Water, light, and attention: that is most of it.