Spring here arrives with the tide running under the Blynman bridge and the Annisquam turning from slate to blue. White Mills Landscaping starts its season right about then — the first cut of the year, winter's matted thatch raked out, a clean line drawn where bed meets turf. Yards along the river warm slower than the ones set back from it, so timing matters nearly as much as technique. Through the warm months it settles into steady mowing, trimming and the edge work that makes a small lawn look genuinely cared for from the street. Gloucester is home ground, and the river runs through most of the route.