Ventilate Your Greenhouse for Healthier Plants

Proper ventilation is a key ingredient to healthy plants.

Your plants will love the protection and light they get from a greenhouse, but something is missing; fresh air! That's why it is so important to make sure there is good ventilation in the greenhouse.

Plants must have a fresh supply of carbon dioxide so they can properly photosynthesize. This is the process that makes food. Good ventilation also helps to deter pests and reduces overheating in the greenhouse.

To get the best results, air needs to circulate throughout the entire greenhouse. Cross-ventilation is easily achieved by positioning base vents low on one side of the greenhouse and large vents or an exhaust fan high on the opposite side. This will bring in the much needed fresh air and pull stale air out of the greenhouse.

In addition, placing circulation fans inside the greenhouse will increase cross-ventilation as well as encourage pollination within the greenhouse.

Find the right size exhaust fan for your greenhouse.

To determine which fan you need, you must calculate the volume of your greenhouse. For a simple estimation (this will slightly over estimate your volume) multiply the length x width x the height of your greenhouse.

For example, the 8' x 12' x 8' Garden Oasis would need 768 CFM (8 x 12 x 8 = 760 CFM). The 12” standard exhaust fan would be sufficient at 760 CFM.

The general rule is that your intake CFM should be less than the exhaust.

Once you have theinfo you need, be sure to check out our greenhouse cooling and ventilation products