In July the water in Grassy Sprain Reservoir goes flat and silver by noon, and every lawn in the neighborhoods around it starts asking for shade. Pacific Lawn Sprinklers Yonkers spends those weeks on the mower and the trimmer, cutting a little higher once the heat sets in so the turf keeps its own roof over its roots. Edges along walks and driveways get run clean, beds get mulched, hedges get squared before the growth gets ahead of anybody. Spring and fall bring the bigger work — the raking out, the seeding, the last leaves off the grass before the ground hardens. It is steady work on a hilly city's front yards, and the crisp line where lawn meets pavement is the whole point.