By late April the pines east of Brentwood have taken their spring color and every lawn in the neighborhood wants cutting at once. V and G landscaping corporation meets that rush and then holds the line all season — weekly mowing, trimming, edging, and the November work of leaves and bed cleanup. Long Island heat sits heavy through July and August, so the crews take the cooler ends of the day and keep the blades sharp. What a homeowner gets handed back is an evening yard that looks finished: level grass, borders defined, walks swept clear. Across Brentwood, Central Islip and Bay Shore, that is the routine, kept one property at a time.