Newfields sits on the tidal Squamscott, where the river runs both directions and salt air comes up from Great Bay on a south wind. Greenfields Landscape & Irrigation reads the dry side of that — irrigation systems designed, installed, tuned, started up in spring and blown out before the first hard freeze — alongside mowing, edging, planting and mulching. August is when it shows: a lawn still deep green while the fields across Route 108 have gone straw-colored. Water put exactly where it is needed, on a schedule, is the difference between a yard that survives the summer and one that enjoys it. The rest is grass, kept even, week to week.