A structure for the cultivation or protection of plants, usually made of glass and aluminium, and where temperature, humidity and ventilation can be controlled. For questions on greenhouse-effect please use the greenhouse-effect tag
A greenhouse is a structure, primarily made of glass and a metal framing, that is designed to retain warmth from the sun and to cultivate or protect plants. Most greenhouses can control the temperature, humidity and ventilation to optimize the conditions for the plants.
For questions on the greenhouse-effect please use the greenhouse-effect tag