A greenhouse generally comprising a growing section and a climate control system adjacent to the growing section. The climate control system controls the environment within the growing section by flowing ambient air from outside the greenhouse into the growing section, re-circulating air from the growing section back into the growing section, or a combination thereof. A method for controlling the temperature within a greenhouse growing section comprises flowing air into the growing section from outside the greenhouse to reduce the temperature in the growing section. Warm air is flowed into the growing section to increase the temperature in the growing section, and air within the growing section is re-circulated when the temperature therein is at the desired level.
