The Basic Requirements of the Greenhouse

Basic Requirements

All greenhouses should offer plenty of light and good ventilation, and those planned for year-round operation also require efficient heating systems. The glass and frame are actually only part of your greenhouse, which you count on to provide an artificial climate. Heater, ventilators, humidifiers, and perhaps a cooling system, must be considered in almost all greenhouse operations. Requirements will vary with each house, depending on location and nature of the crop or crops to be grown.

The foundation of the house must be strong enough to carry the whole weight and give support against wind and ice. You can use concrete, poured cement, cinder blocks, or Transite. All of these materials have good insulating qualities and will give protection against loss of heat.

The framework may be of aluminum, redwood, or cypress. Aluminum is originally more expensive than wood but involves little or no upkeep. You can purchase either aluminum or wood already cut and grooved for easy installation.

Glass, Fiberglas, or plastic such as polyethylene, are materials used for greenhouse light; 20- to 30-inch panes are preferable. One of the most popular prefabs comes with 24- by 30-inch lights. If using glass, you need not buy Grade A quality. Double-thickness Grade B will suffice. Many old greenhouse

8. A dug-out and shelf-lined cellar greenhouse heated through the
cellar door-puts a sunny but awkward corner to maximum use. Note
also the handy cold frame. (Photograph by Genereux)

9. When one unit proves inadequate, add another. This lean-to greenhouse, with an extension on one side, gained at least a third more growing space with the addition of an attached, king-sized cold frame. (Photograph by Genereux)

books caution against using anything but Grade A, but Grade B has proved entirely practical.

Tags: home greenhouse

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