

Some of these early attempts required enormous amounts of work to close up at night or to winterize. The concept of greenhouses also appeared in the Netherlands and then England in the 17th century, along with the plants. One of the earliest records of the Annals of the Joseon Dynasty in 1438 confirms growing mandarin orange trees in a traditional Korean greenhouse during the winter and installing an ondol system to provide heat. The 15th century treatise, the Sanga Yorok, contains descriptions of greenhouses designed to regulate the temperature and humidity requirements of plants and crops. Greenhouses in which the temperature could be manually manipulated first appeared in 15th century Korea. lapis specularis), according to the description by Pliny the Elder. The cucumbers were stored under frames or in cucumber houses glazed with either oiled cloth known as specularia or with sheets of selenite (a.k.a. Cucumbers were planted in wheeled carts which were put in the sun daily, then taken inside to keep them warm at night. The Roman gardeners used artificial methods (similar to the greenhouse system) of growing to have it available for his table every day of the year. The Roman emperor Tiberius ate a cucumber-like vegetable daily.

The idea of growing plants in environmentally controlled areas has existed since Roman times. Different techniques are then used to evaluate optimality-degrees and comfort ratio of greenhouse micro-climate (i.e., air temperature, relative humidity and vapor pressure deficit) in order to reduce production risk prior to cultivation of a specific crop. The glass greenhouses are filled with equipment including screening installations, heating, cooling, lighting, and may be controlled by a computer to optimize conditions for plant growth. Many commercial glass greenhouses or hothouses are high tech production facilities for vegetables or flowers. The interior of a greenhouse exposed to sunlight becomes significantly warmer than the external ambient temperature, protecting its contents in cold weather. A miniature greenhouse is known as a cold frame. These structures range in size from small sheds to industrial-sized buildings. Different techniques are then used to evaluate optimality-degrees and comfort ratio of greenhouse micro-climate (i.e., air temperature, relative humidity and vapor pressure deficit) in order to reduce production risk prior to cultivation of a specific crop.įor other uses, see Greenhouse (disambiguation), Green House (disambiguation), Greene House (disambiguation), and Hothouse (disambiguation).Ī greenhouse (also called a glasshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown. A greenhouse (also called a glasshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown.
