A hoop house, also known as a poly tunnel, high tunnel, or hot house is a type of greenhouse structure that is typically made from flexible materials such as plastic, PVC, or metal hoops, and covered with a layer of polyethylene plastic or similar material. Hoop houses are used in agriculture and gardening to extend the growing season by protecting crops from adverse weather conditions, including frost, wind, and excessive rain. They provide a controlled environment that can enhance plant growth and yield, making them a valuable tool for farmers and gardeners alike.