Enjoy the added benefit of protecting your plants during the cooler seasons. This Frost Cover Kit wraps up and over the top of your tower. Use the Clothes Pins to secure the edges together to keep the heat in and the frost out. We recommend using this with a Reservoir Heater. If you have plants that need to be pollinated, open the covering to allow the bees to come in during a few hours when bees are active and then secure it again with the clothes pins.