Running Your Green House Economically As A Commercial Entity

One of the most critical factors you need to be aware of, with your commercial greenhouse, is the temperature is crucial to how successfully your plants will grow and thrive.

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Unheated greenhouses, otherwise known as, cold houses are one type of greenhouse you can have. Another type is known as cool houses.

Cool houses are usually kept at 55-60 degrees during the night. Warm houses, which are heated, are usually kept at 60-70 degrees during the night. When planning on what types of plants you can grow in your greenhouse, it's important to realize you should add 10 degrees to the night temperature to obtain the proper daytime temperatures. Any one of these types of greenhouses is suitable to grow many different kinds of plants inside.

If you live where outdoor night temperatures never dip below 32 degrees, you can run a cold (unheated) commercial greenhouse the year round. Otherwise, you might find it profitable to operate a cold greenhouse until late fall, close it down during the coldest winter months, then resume operations in early spring. In such a house, you can make money on annuals, spring-flowering bulbs, and bedding plants by forcing or starting them in late February or early March. The cold greenhouse is also an excellent place for growing lettuce.

In summer, use the unheated greenhouse for tomatoes, seedling perennials, or almost any plant that flowers in summer. In this type of greenhouse, winter-grown plants should be planted directly into the bench soil. Here they will withstand lower temperatures than if planted in pots. In the following lists are plants I have found profitable to grow under the various conditions specified.