The Garden Conservancy Open Days Program presents “Alpine Troughs and Treasures.” Join Lori Chips, author of "Hypertufa Containers, Creating and Planting an Alpine Trough Garden," for a special workshop on the aesthetics and cultivation of trough plantings. This will be embedded in the acclaimed alpine plant sale at Stonecrop Gardens, which attracts top vendors and plant enthusiasts from throughout the Eastern US and Canada. Once you’ve found new rock garden treasures at the sale, get some fresh ideas for how to use them once you get home.