by Roberto Lopez and Joshua Gerovac, Purdue University:

Reduce air temperatures during bedding plant production

Plants integrate temperature in their environment over time and any change to the temperature set point in your greenhouse influences developmental rates. Plants develop leaves and progress toward flowering in response to the average daily temperature (ADT).

In an effort to save on energy costs, greenhouse growers often lower their air temperature set points. As a result, plant temperature is reduced and plants develop progressively slower and this varies from species to species.

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