The cover is made from a clear or translucent material, such as plastic or polycarbonate, and is designed to allow sunlight to pass through while protecting the plants inside from the elements.
Hoop-houses are typically used to extend the growing season of plants by providing a protected environment that is warmer and more sheltered than the outdoors. They can be used to grow a wide range of plants, including vegetables, herbs, and flowers.
Hoop-houses can be used to protect plants from extreme temperatures, pests, and diseases, and they can also be used to control the environment inside the greenhouse by regulating temperature, humidity, and light levels. They can be ventilated to allow for air circulation and can also be equipped with heating and cooling systems to maintain optimal growing conditions.