Answer: Most plants will not overwinter well in containers or planter boxes because their roots freeze during the winter months. You can plan on replacing the plants every spring (perennials included) or you can remove the perennials in the fall, pot them up into individual containers and bury the containers in the garden in a protected place. The soil around the containers will help insulate them and keep the roots alive. In the spring you can replant them in your deck boxes. Best wishes with your plants!
Q&A Library Searching Tips