NY Plant Seed Swap. Whether you're new to gardening or a long-time native plant grower, this drop-in event is for you! Learn from experienced gardeners, swap native seeds, and learn how to winter-sow them. Make native-seed crafts, and enjoy some baked goods. 11 a.m. at Thacher State Park Visitor Center 830 Thacher Pk Rd, Voorheesville, 12186