Greenhouse covers can retain heat, protect plants from extreme weather, and improve overall energy efficiency in a winter greenhouse. Covers made from materials like polycarbonate or polyethylene provide insulation and trap heat inside, creating a more stable environment for plants during colder months.
Double or triple-layered coverings are especially effective, as the extra layers act as thermal buffers, reducing heat loss. A good cover also shields plants from wind, snow, and ice, which can damage delicate crops and the structure itself. While greenhouse covers help maintain warmer temperatures, it’s important to ensure proper ventilation to avoid overheating or excessive humidity buildup, which could harm plants.
