Most growers are aware that different types of plants have varying preferred climates in which they grow. Some plants grow happily in one environment throughout their entire life cycle; others grow best in one environment during the vegetative stage and another during the flowering stage.
As with all living things, plants thrive in some climates and struggle in others. The consequences of that are apparent where icy winter temperatures or sweltering desert heat render the landscape barren. Even in the relative comfort of an indoor grow space, small swings in temperature can have significant impacts on growth, affecting both the quality and yield of your crops.
In nature, plants get a chance to cool off when the sun goes down, and in an indoor environment, the lights-off period provides the same opportunity. The difficulty is that just as with day-time temperatures, plants have ideal "lights out" temperatures. The risk of cooling down too much is genuine, especially in places where the outdoor nighttime temperature drops significantly. In addition to the complications that overly cold temperatures present, colder air also increases the risk of condensation forming on the plants, which could become a haven for damaging molds and fungi. This makes it of paramount importance that growers are always aware of the temperature inside their growing environment.
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