I am still learning how to keep plants in it all winter. I have a few ideas to try this year. I guess I'm gonna have to add a solar panel or electricity for a heater, although I had hoped I wouldn't have to. I am constantly adding to my garden space. For many years this little greenhouse has started all of my seeds for my family, and a few others. If you have any tips for winter growing in a greenhouse, I am willing to learn!