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A greenhouse is a great way to grow plants, but sometimes the inside temperatures can become unbearable due to the sun shining inside. To keep your plants healthy and growing, you will need to know how to shade a greenhouse to keep some of that direct sunlight out, and help lower the temperatures inside. more »
A greenhouse allows the gardener to control the environment in order to grow plants, even when the outside temperature is far too cold. Greenhouses come in a variety of sizes and types, from the massive commercial arboretum to a simple portable A-frame. Before building or planning a greenhouse, there are questions the gardener must ask. more »
Home gardeners start searching seed catalogs in the dead of winter---it's a primeval urge to get spring going. The first greenhouses were built to house tropical plants brought back from the tropics by seafaring explorers. Today, greenhouses come in all shapes and varieties from the "crystal palaces" of the Victorian conservatory to... more »
While most people know a greenhouse is used to grow plants, many don't understand the benefits that go with using a greenhouse. A greenhouse can improve pest control, and help in regulating temperature, humidity, and water distribution, all of which can promote and encourage good plant health and lead to maximum production. Whether... more »
If you have a greenhouse and want to keep your plants healthy, you need to know how to cool a greenhouse, especially during the hot summer months when the greenhouse can become a sweltering hotbox. The plants will suffer if you do not add some form of cooling. Get ready for the summer heat before you see any signs of problems with... more »
Greenhouses protect your flowers and plants from glaring sun and dry conditions while promoting...
Investing in a green house is a great way to get a jump start on the planting seasons or...
You do not want your home and garden invaded with pests. They are a nuisance and unhealthy....
Herbs are among the most versatile of all plant material, offering medicinal benefits, aromatic...
You don't have to live in Saskatchewan to think about building a greenhouse. All but the most tropical climates have seasons of frost and cold... more »
If you love your garden, then you are probably looking for ways to start your seeds early. A greenhouse keeps your little seeds warm and comfy,... more »
Greenhouse maintenance is a necessary task when keeping an indoor garden or solarium. Taking care of the structure and its parts results in a... more »
A greenhouse can be a self-contained structure with apparatus for climate control and irrigation. These structures tend to be expensive, ranging... more »
Greenhouse farming is undergoing a dramatic change. The greenhouses used to grow hothouse tomatoes and exotic plants for sale in supermarkets no... more »
A greenhouse is a structure made of plastic, glass or fiberglass meant to cultivate and exhibit plants. It allows the sunlight to penetrate into... more »
Vegetables, flowers and herbs will grow year round in a geodesic greenhouse dome. Domes require only limited additional heating and cooling... more »
A greenhouse (also called a glasshouse) is a building where plants are cultivated.
A greenhouse is a structure with a glass or plastic roof and frequently glass or plastic walls; it heats up because incoming solar radiation from the sun warms plants, soil, and other things inside the building faster than heat can escape the structure. Air warmed by the heat from hot interior surfaces is retained in the building by the roof and wall. These structures range in size from small sheds to very large buildings.
Greenhouses can be divided into glass greenhouses and plastic greenhouses.
Plastics mostly used are PEfilm and multiwall sheet in PC or PMMA.
Commercial glass greenhouses are often high tech production facilities for vegetables or flowers. The glass greenhouses are filled with equipment like screening installations, heating, cooling, lighting and may be automatically controlled by a computer.
The glass used for a greenhouse works barrier to air 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. A miniature greenhouse is known as a cold frame.
Uses
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 inarable land into arable land, thereby improving food production in marginal environments.
Because greenhouses allow certain crops to be grown throughout the year, greenhouses are increasingly important in the food supply of high latitude countries. One of the largest greenhouse complexes in the world is in Almeria, Spain, where greenhouses cover almost .
read more at » http://en.wikipedia.org/wiki/Greenhouse
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