What is the purpose of frost and freeze protection for plants?

The purpose of frost and freeze protection for plants is primarily to prevent damage to tender plant tissues during cold weather events. Many plants have delicate tissues that can suffer significant harm or even die when exposed to freezing temperatures. Frost can cause ice crystals to form within plant cells, leading to cellular damage, wilting, and even death of those cells. Preventative measures, such as covering plants with frost blankets, using heaters, or employing wind machines, are often employed to maintain a warmer microclimate for sensitive plants.

While enhancing growth in the spring, supporting rapid root development, and encouraging flowering are important aspects of plant care, these goals do not directly address the immediate threats posed by frost and freeze conditions. Rather, the primary concern during cold weather is shielding plants from damage to ensure their survival and health during these challenging periods. By protecting against frost and freeze, gardeners help ensure that plants can thrive once the temperatures rise again.