Explore four gardens in Austerlitz, Copake Falls, Hudson, and Valatie, open to the public for self-guided tours to benefit the Garden Conservancy. No reservations required; rain or shine. Featuring a plant sale, multi-level patios, long hedges of hydrangea and hornbeam, water features, a focus on foliage and wildlife sustainability, kitchen gardens, a formal setting of boxwood and roses, and a restoration in progress at poet Edna St. Vincent Millay’s home.