Up by Hartwick Pines the old white pines stand over ground that never really warms until June, and Grayling's growing season is a brief, generous thing. Potvin Home and Lawn Maintenance works inside that window — weekly mowing, trimming around trees and fence posts, edging where lawn meets stone and asphalt. Needles and cones come down steadily here, so cleanups matter as much as cutting, once in May and again when the hardwoods let go. The sand under these lawns drains fast, and reading how a yard takes water is half of keeping it green. Long northern evenings make the best hours for it, and a finished yard looks its finest at dusk.