To extend the growing season in cold weather, focus on optimizing heat retention and protecting plants from frost. A well-insulated greenhouse with double-layered glazing and thermal mass, such as water barrels or stone floors, can store heat during the day and release it at night. Using row covers or cold frames helps trap heat around plants and shields them from chilly winds.
Planting cold-hardy crops allows for harvesting later into the fall and winter months. For even more protection, consider using supplemental heating, such as electric or propane heaters, to maintain a consistent temperature. Starting seeds indoors and gradually transitioning them to the greenhouse can also extend the growing season, allowing for earlier plantings.
