Ventilation is necessary in a greenhouse to circulate the air and bring in fresh carbon dioxide, which the plants need, from outside. [5] X Research source
If you’re not actually growing anything in the dead of winter, you don’t have to worry about this. But it might still be an issue in early spring.
Brick benches or a brick wall add some aesthetic quality to your greenhouse as well as store energy to help keep your greenhouse warm.
Greenhouse supply companies offer paint you can use to coat the roof. This is a less attractive option because the paint is hard to remove in the fall and you’d have to repaint every year. [10] X Research source
Experiment with combining different methods to keep your greenhouse at the temperature it needs to be.
For example, if you live in the northern hemisphere, you might build your greenhouse in the backyard on the southern exposure of your house.
For example, you could build a small and simple lean-to greenhouse off the side of your house.
Take into account the possibility of falling limbs that could damage your greenhouse, especially if you live in an area that’s prone to severe weather. [17] X Research source
Tomatoes Peppers Spinach and other leafy greens Cucumbers Eggplant
The greenhouse effect isn’t a bad thing in and of itself. The Earth’s average temperature would be below zero if it weren’t for this layer of the atmosphere. The greenhouse effect causes problems when there are too many greenhouse gases in the atmosphere. This causes the Earth to get too warm, leading to melting ice caps and other environmental disasters.
