Yes, the cold snap caught me by surprise and I only got 1/2 of the deck floor covered before getting the plants in on time. Next year, the floor will be taken care of well before the plants go in, plastic underlay of some sort and I/O carpet. I am going to try the thermos barrel for water. I have an aquarium heater that will keep the water warm. Worth a try to keep heat and humidity inside on cold days.
