 The hardiness zone is 6b except in Marysville where it is 7a.Common trees include red maple, Virginia pine, oak, eastern white pine, eastern hemlock, birch, shagbark hickory, and juniper, though American sycamore, ironwood, sugar maple, black walnut, elm, alder, and sassafras are also fairly common.Mosses of various species are common sights, especially on fallen tree logs, along streams, on tree trunks, and in sidewalk cracks, usually growing in shaded areas.