What conditions are needed for plants to grow in greenhouses?

Answer 1

Greenhouse
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For the nuclear test conducted in 1951 see Operation Greenhouse. For the automotive term, see Greenhouse (automotive term).

A greenhouse in Saint Paul, Minnesota.A greenhouse (also called a glasshouse or hothouse) is a building where plants are cultivated. A greenhouse is built of glass or plastic; it heats up because the sun's incoming electromagnetic radiation warms plants, soil, and other things inside the building. Air warmed by the heat from hot interior surfaces is retained in the building by the roof and wall.

The glass used for a greenhouse works as a selective transmission medium for different spectral frequencies, and its effect is to trap energy within the greenhouse, which heats both the plants and the ground inside it. This warms the air near the ground, and this air is prevented from rising and flowing away. This can be demonstrated by opening a small window near the roof of a greenhouse: the temperature drops considerably. This principle is the basis of the autovent automatic cooling system. Greenhouses thus work by trapping electromagnetic radiation and preventing convection. See solar greenhouse (technical) for a more technical discussion of solar greenhouse workings.

Greenhouses are often used for growing flowers, vegetables, fruits, and tobacco plants. Bumblebees are the pollinators of choice for most greenhouse pollination, although other types of bees have been used, as well as artificial pollination.


Mowing young tobacco in greenhouse of half million plants (Hemingway, South Carolina)Besides tobacco, many vegetables and flowers are grown in greenhouses in late winter and early spring, then transplanted outside as the weather warms. Started plants are usually available for gardeners in farmers' markets at transplanting time.

The closed environment of a greenhouse has its own unique requirements, compared with outdoor production. Pests and diseases, and extremes of heat and humidity, have to be controlled, and irrigation is necessary to provide water. Significant inputs of heat and light may be required, particularly with winter production of warm-weather vegetables. Special greenhouse varieties of certain crops, like tomatoes, are generally used for commercial production.

Greenhouses are increasingly important in the food supply of high latitude countries. The largest greenhouse complex in the world is at Leamington, Ontario (close to Canada's most southern spot) where about 200 acres (0.8 km²) of tomatoes are entirely grown under glass.

Greenhouses protect crops from too much heat or cold, shield plants from dust storms and blizzards, and help to keep out pests. Light and temperature control allows greenhouses to turn unarable land into arable land. Greenhouses can feed starving nations where crops can't survive in the harsh deserts and arctic wastes. Hydroponics can be used in greenhouses as well to make the most use of the interior space.

Biologist John Todd invented a greenhouse that turns sewage into water, through the natural processes of bacteria, plants, and animals.

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See also
Conservatory (greenhouse)
Solar greenhouse (technical)
Olcott Park Greenhouse, Linda Greenhouse, Bunnatine Greenhouse
Greenhouse effect
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External links
Green houses are climate controlled. Jain Green Houses have a variety of applications, the majority being, off-season growing of vegetables, floriculture, planting material acclimatization, fruit crop growing for export market and plant breeding and varietals improvement.
North Carolina State University Greenhouse Food Production website
Organic Greenhouse Tomato Production

Answer 2

There's some good books out there that tell you all about greenhouse growing. Check the bookstore. We have a greenhouse and a few important things are: temperature control - it can get 120 in there unless you have something to keep it cooler. Air circulation is important and we have a fan. We have vents in both ends. A greenhouse can easily get too hot. Much depends on what you want to grow, what area of the country you live in, etc, which is why you'd best benefit by a visit to a local bookstore and really do some in depth reading on it.

Answer 3

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Answer 4

same as all living things. They need food, water and shelter. For a plant all three of these differ between species. when buying a plant read the instructions that come with it or ask the staff. Shelter consists of humidity level, lighting level and wind level.
Some plants need a certain type of soil or food.
Some require different water amounts and sometimes prefer different techniques such as setting the planter in water instead of pouring water on top.

Answer 5

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Answer 6

Heat & Light, but not too much in the height of the summer. Moisture and humidity. Good soil & nutrients like compost or fertiliser

Answer 7

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Answer 8

Lots of sun (or white light), lots of carbon dioxide, lots of water. Obviously depends on the plants though...

Answer 9

truly, the optimal criteria are an same as those modern-day on your outside backyard: a great number of image voltaic, Temperature moderation (no longer huge alterations between nighttime and day), air flow (inclusive of followers and vents) to duplicate the wind outside, Water, for sure, relies upon upon your software methods. strong success with your layout. you'll discover many resources on line to assist with your study.

Answer 10

It has to be warm and there should be lots of moisture about. Carbon-dioxide and light too.