July on the South Fork is a test of patience: sandy soil, weeks without rain, and lawns that go pale in the open long before they go pale in the shade. Pacific Lawn Sprinklers works that stretch of the calendar around Southampton and Tuckahoe, mowing on a schedule that respects the heat and cutting high enough to keep the crowns shaded. By afternoon the breeze finally lifts off the bay, the whole day gets easier, and that is when the trimming and edging get done. It is small, repeated care, and the proof of it is a lawn still green in the third week of a dry month. Southampton, Tuckahoe, Shinnecock Hills and North Sea.