North of Suffern the state parkland runs on for miles, and the big oaks that spill out of it throw long, moving shade across the yards nearest the tree line. Neighbors Landscaping Inc works that shade all summer, mowing lawns that grow thin under the canopy and thick out where the sun finally lands, trimming around trunks and stone, edging beds back to a clear line. Grass in the shadow of a mountain wood asks for a lighter touch and a closer eye, and the work is paced to match. Come the tail of the year, the same yards need their leaves gathered and hauled off before the ground goes hard. Street by street in Suffern, it adds up to a neighborhood that looks tended.