Talking About Green

The most common misconception about commercial greenhouses – or any greenhouse, for that matter – is that these are covered places with hot and humid temperatures maintained on a 24/7 basis.

• Such idea comes from the name greenhouse that evokes images of a sweltering earth as well as the appearance of perspiration on the walls of the structure.
• There are two ways to come about starting your own commercial greenhouse garden, you can buy one or learn how to build a greenhouse using commercial greenhouse plans.

Cooling Is Key to Growth

But this idea is far from the truth.

• Commercial solar greenhouses are actually equipped with mid-sized to large cooling systems, which are designed to ensure that the interior of the structure is sufficiently cool during the day and warm at night.
• Keep in mind that too hot and too cold environments are detrimental to the growth of most plants cultivated in commercial quantities inside the greenhouse.

Various methods are used to ensure that such a delicate balance of warmth and cool can be maintained inside the structures, of which the most common way is through vents.

• The general rule is that the larger the greenhouse, the warmer the climate and the more tropical the plants, the more vents, shutters and other cooling measures must be in place.
• Another way is to buy commercial glass greenhouses, which can be dangerous if shattered, and are generally more expensive.

Also, commercial greenhouses are not completely covered from the outside world since fresh air is also necessary for the plants to thrive. Oxygen must be introduced from natural sources, which only the atmosphere can provide in sufficient levels.

So, when you are considering the establishment of a greenhouse, be it commercial in scope or residential in scale, be sure to factor in the ways with which to effectively keep the structure cool.

• Besides, you don’t want to work too long in an environment that mimics the Sahara Desert or the North Pole, do you?

Cooling Options for Commercial Greenhouse Structures at Your Fingertips:

Speaking of the ways to keep cool in the greenhouse, experts and manufacturers of these structures have come up with numerous methods to achieve the purpose.

• These choices can be categorized into the manual, electronic and solar types to denote the kind of power needed to put these methods into actual operation.
• Your choice will often be a combination of all three ostensibly to take advantage of existing technology, to save on utility costs and to make gardening tasks easier on your body.

A few of the choices for a commercial greenhouse cooling system include:

1. Roof vents are widely considered the best of all types of ventilation systems since these serve as an escape route for stale air while also providing for the entrance of cool air intake.
2. Side venting can be achieved by glass louvers, which will provide for greater levels of cool during the warmer seasons.
3. Shade cloths and other screening materials are used to provide additional but removable shade to the greenhouse. These sources of additional shade are particularly helpful during the warm summer and spring months.
4. Exhaust fans are also useful in cooling the commercial greenhouse, but not all greenhouses will require these fans. Plants that do require exhaust fans are specialty crops like chrysanthemums, orchids and other tropical flowers with the ideal air exchange rate being one complete air exchange per minute.
5. Barrels filled with water can disperse warm air into the structure at night.

If you are in doubt about the best cooling system for your commercial greenhouse, it’s always best to ask the professionals. Otherwise, you may be looking at a season’s worth of ruined crops.

Whitney Segura is an expert in greenhouse gardening and is the founder and owner of one of the largest distributors of greenhouse kits in the United States, including a full line of high quality commercial greenhouses, professional hobby greenhouses, portable greenhouses, hydroponics equipment, compost bins, and other greenhouse accessories.

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