Humidity Dome Vent for Seedlings

October 19, 2018

It is important to increase humidity around your seeds as they are germinating. The easiest way to accomplish this is to place a humidity dome on top of your seed trays. A good humidity dome comes with a vent you can open and close to conserve or vent moisture and heat.

PC: Leslie F. Halleck

Remove the dome once all your seedlings have germinated and begin to produce green growth. If you keep it on too long, fungal diseases or rot could set in. While young seedlings need to remain moist, excess moisture can promote damping off disease, which causes seedlings to rot at the soil line and topple over. Too much humidity also encourages powdery mildew on young seedlings and transplants.

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