CT Phone: 888-842-2442. .
Saturday, May 12; hours vary. Visitors may begin at either Hollister House Garden, 300 Nettleton Hollow Road, Washington, 10 a.m. to 4 p.m.; or Cobble Pond Farm, West Woods Road, Sharon, 1 p.m. to 4 p.m.The Garden Conservancy's Open Days Program - Explore two private gardens in Sharon and Washington, open for self-guided tours to benefit the Garden Conservancy. No reservations required; rain or shine. Cost: $5. Special highlights include exuberant plantings within formal lines, inspired by classic English gardens, and garden rooms in pastoral settings defined and accented by stone walls, clipped yews, sweeping lawns, mature maples, a giant copper beech, European birches, ginkgo and dogwoods, including unusual species trees. See www.opendaysprogram.org or call The Garden Conservancy toll-free weekdays, 9 a.m. to 5 p.m. EST, 1-888-842-2442.