Greenhouses, also known as hothouses. They allow light transmission and insulation (or heating), used for cultivating plants. In seasons unsuitable for plant growth, they can provide a greenhouse growing period and increase yields, commonly used for the cultivation or seedling of warm-weather vegetables, flowers, trees, and other plants, especially during cold seasons. There are many types of greenhouses, which can be further categorized based on different frame materials, light transmission materials, shapes, and heating conditions.

Greenhouse types include planting greenhouses, breeding greenhouses, exhibition greenhouses, experimental greenhouses, catering greenhouses, and recreational greenhouses, etc.; greenhouse system designs include heating systems, insulation systems, cooling systems, ventilation systems, control systems, and irrigation systems, etc.; greenhouses are merely simple plastic film and skeletal structures, with minimal internal facilities and do not meet the high standards of greenhouses. Therefore, strictly speaking, greenhouses require more advanced equipment than greenhouses, possibly utilizing more sophisticated instruments for precise temperature control.