How Can I Stop Condensation In My Greenhouse?

Do you have a ventilation system in your greenhouse?

Do you have a heating system in your greenhouse?

Are your plants spaced far enough apart?

Do all of the plants drain well?

Having adequate air circulation is especially important during the fall and spring months. A ventilation fan is one of the best ways to decrease the moisture content, the temperature, and of course, the humidity level. Just keep in mind that it may take up to 30 minutes for the right exchange of air to occur and to reduce the amount of moist air inside of the greenhouse.

Combination of heating and ventilation lowers down the relative humidity in a greenhouse. Ventilation lets in dry air from outside and exchanges it with the moist air inside the greenhouse. In the meantime, the heating system raises the temperature of the dry outdoor air and also expands air to hold more moisture, so it prevents condensation from forming.

The right spacing improves air circulation at the plant level. Transpiration always involves an increase in moisture, and that moisture can get trapped if the plants are placed too close together, which results in insufficient air movement and too much moisture.

Make sure you water the plants properly. Water them enough so that not too much water falls on the floor, and water them early in the day so that they dry out before it gets dark outside. Too much water contributes to the amount of water in the air, among other things, which causes condensation.

Greenhouse condensation is directly affected by how well your greenhouse is draining. After all, water that just sits there will increase the humidity level and the amount of warm air in the greenhouse, trapping that condensation instead of getting rid of it.