Crescent Avenue keeps its old trees and its old houses close together, and in winter that whole street can go silent under six inches before breakfast. Sage Landscape Contractors and Tree Experts works Plainfield on both sides of the calendar — plowing driveways, clearing walks and salting ice through the cold months; mowing, trimming, edging and cleanups once the ground gives again. The winter job is measured in how early a car can leave. The summer job is measured in how well a lawn holds its color and its border by the end of the week. One crew, two completely different kinds of early morning.