Greenhouses are extremely beneficial to plant growers. They use them for many reasons. Most plant growers would agree that the biggest reason they use greenhouses is because they give them the opportunity to grow plants all year around. Either if it’s scorching hot or freezing cold, the greenhouse can be set to an ideal temperature that provides the most productive habitat. This allows people who live in extreme climate conditions to still be able to successfully grow their own crops and plants.
Greenhouses also provide protection for plants. They protect them from too much heat or cold and shield them from harsh weather condition like dust storms, blizzards, etc. This guarantees an abundant and healthy supply of plants. This in turn, gives plant growers a sense of security by knowing their crops are in a protected environment and can’t be destroyed.
Another significant reason gardeners use greenhouses is because they open up the opportunity for them to grow a much wider range of plants since they have complete control over the growing environment within the walls. This allows them to grow a larger variety of plants and almost have no limitations. As you already may know, all plants have different necessities and require unique, special treatments that make it hard to keep them alive. For example, there are some plants that require full sun, less sun, lots of water or only a very little bit of water. Since the greenhouse enables all these conditions and requirement to be met there is no reason why a gardener can't grow anything they desire. In turn, this advantage is great for many gardeners because by growing a wide variety of plants they are more likely to propagate and develop new varieties.
As you can see, there are many benefits of growing plants in a greenhouse and it is very clear why plant growers use them. Greenhouses have definitely helped plant growers to be much more productive and have given them the opportunity to grow almost any type of plant with having very few limitations.


http://en.wikipedia.org/wiki/Greenhouse
http://www.greenhousegrowing.co.uk/WhyUseAGreenhouse.html
http://www.thefarm.org/charities/i4at/lib2/grnhsgd.htm
http://www.gardensheds.greenhouses.arbors.learnabout.info/Advantages%20of%20a%20Greenhouse.htm