The Garden Conservancy Open Days program shares two private gardens open to the public in Roxbury and Washington Depot. No reservations required; rain or shine; 10 a.m. to 4 p.m. Highlights include a woodland garden, a crabapple meadow, collections of rare and unusual plants, and a bit of whimsy. Begin at Appledore or see website for additional locations. See www.gardenconservancy.org/open-days or call The Garden Conservancy toll-free weekdays, 9 a.m. to 5 p.m. EST, 1-888-842-2442.