We only have cold resistant starts in the greenhouse at this time of year, but even they prefer not to experience an arctic blast. We cover the trays inside, fill tubs with hot water and place those on the floor under the trays, then add polythene curtains to reduce the inside area. Finally, we wrap the outside with greenhouse plastic. After the last hot water fill, the door will be covered and sealed up.
It’s Going to be Cold Tonight
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