Taking some time to answer your winter greenhouse questions. We’ve been experimenting with growing food over the winter in a greenhouse for a number of years now. We started with a small greenhouse when we lived in Manitoba. There, we fiddled with heating with large containers filled with water as a heat sink. We also tried out the hot bed method for heating/warmth in the winter in our greenhouse. Now, here we are 4 years later in northern Ontario with an insulated, wood heated winter greenhouse growing food all winter long. I added some reflective mylar insulation (Reflectix) to the north, east and west walls of our greenhouse for added heat retention and light reflection.
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