Polytunnels and cold frames

Polytunnels and cold frames are agricultural structures designed for optimal plant growth and protection. Polytunnels are structures made from lightweight materials such as metal and plastic, covered with transparent film that allows sunlight to pass through while protecting plants from adverse weather conditions. These tunnels are often used for growing vegetables, flowers and herbs all year round. Cold frames are similar structures that serve to retain heat and moisture. They are often used for less hardy plants, such as tropical species or seedlings that require higher temperatures and humidity. Cold frames can be equipped with special systems for regulating temperature and humidity, making them ideal for the growth of specific plant species.