Building made chiefly of transparent material in which plants are grown
For other uses, see Greenhouse (disambiguation), Green House (disambiguation), and Hothouse (disambiguation).
Victoria amazonica (giant Amazon waterlilies) in a large greenhouse at the Saint Petersburg Botanical Garden
A greenhouse is a special structure that is designed to regulate the temperature and humidity of the environment inside. There are different types of greenhouses, but they all have large areas covered with transparent materials that capture sunlight and heat. The most common materials used in modern greenhouses for walls and roofs are rigid plastic made of polycarbonate, plastic film made of polyethylene, or glass panes.[1] When the inside of a greenhouse is exposed to sunlight, the temperature increases, providing a sheltered environment for plants to grow even in cold weather.
The terms greenhouse, glasshouse, and hothouse are often used interchangeably to refer to buildings used for cultivating plants. The specific term used depends on the material and heating system used in the building. Nowadays, greenhouses are more commonly constructed with a variety of materials, such as wood and polyethylene plastic.[2] A glasshouse, on the other hand, is a traditional type of greenhouse made only of glass panes that allow light to enter. The term hothouse indicates that the greenhouse is artificially heated. However, both heated and unheated structures can generally be classified as greenhouses.
Young tomato plants for transplanting in an industrial-sized greenhouse in the Netherlands
Greenhouses can range in size from small sheds to industrial-sized buildings and enormous glasshouses. The smallest example is a miniature greenhouse known as a cold frame, typically used at home, whereas large commercial greenhouses are high tech production facilities for vegetables, flowers or fruits. The glass greenhouses are filled with equipment including screening installations, heating, cooling, and lighting, and may be controlled by a computer to optimize conditions for plant growth. Different techniques are then used to manage growing conditions, including air temperature, relative humidity and vapour-pressure deficit, in order to provide the optimum environment for cultivation of a specific crop.
^"How To Choose A Glazing Material For A Year Round Greenhouse". Ceres Greenhouse Solutions. 3 July 2017. Retrieved 4 April 2023.
^"Way Back When: A History Of The English Glasshouse". Hartley Botanic. 3 September 2015. Retrieved 4 April 2023.
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