Early morning on the Newington side of Great Bay, the tide is still out and the marsh grass lies flat and silver, and the only sound over the yards is the hum of a battery zero-turn making its first pass. Seacoast EcoMow runs electric mowers and battery-powered handheld equipment, so the work goes by quietly — mowing, edging, hedge trimming, garden bed care, mulch laid down dark against the pine duff, and the long spring and fall cleanups when the leaves come off the oaks in one week's worth of wind. What stays behind is the good part: a clean stripe across the lawn, a bed edge cut sharp enough to hold its line all season, a hedge squared off so the house looks like someone loves it. They work Portsmouth and the towns that ring the estuary and the Piscataqua — Newington, Greenland, Rye, New Castle, Stratham, Durham, Dover, and across the water to Kittery and Eliot. Salt air, short seasons, and a yard that looks cared for from the road: that's the whole of it.