Whether you plan on growing plants in your greenhouse year-round or shutting it down for the winter months, you may want to consider winterizing it. Winterizing your backyard polycarbonate greenhouse means preparing the structure to withstand harsh winter weather conditions.

You’ve probably seen plastic stretched over a frame on a garden box, backyard structures with plants growing in them, or large commercial buildings with plastic walls glowing at night, full of seedlings for the next season. All these structures are considered greenhouses. But what is a greenhouse, and what makes these structures different from others?