Sparkill Creek slips along the edge of Northvale, and the sugar maples above it set the calendar for everyone here. Refined Landscape and Design LLC follows that calendar closely: cutting, trimming and edging right through the growing months, shaping beds and borders, then a thorough leaf clearing once the color is down. When the valley freezes the work turns to plowing driveways and lots, opening the walks, salting the places that glaze over first. Getting a property to look composed takes weekly attention rather than one big day. That is the pleasure of it — a piece of ground improving visibly, visit by visit.