This one depends on the climate you’re in. Can greenhouses grow plants during winter? Yes, they can but there’s a few things you need to pay attention to. The temperature in a greenhouse will in general be a couple of degrees warmer than outside, because when the sun shines on the glass op plastic, the heat will be held in the greenhouse. However during frost, there’s no guarantee that the temperature in your greenhouse will stay above freezing point. Luckily there are some steps you can take to avoid your crop from freezing. The most important one is to prepare your greenhouse for winter. If you live in a cold climate, it would also be a good idea for you to explore greenhouse heating options. This way you will be able to enjoy your greenhouse all year long!