Underground gardening greenhouse all year round for only $ 300

In winter, there is a lack of healthy food, the immune system weakens and it often happens that we get sick. At the same time, we need a food rich in vitamins. The cheapest and most profitable is to grow the products yourself in an underground winter greenhouse, especially since you can build one with relatively little money. Build, grow and be healthy ...

There is a video on the Internet that tells you how to build an underground greenhouse:

This is a rather interesting construction that combines the principles of using passive solar heating in combination with the ability of earth structures to retain heat. 

The employees of the American Benson Institute, specialized in sustainable agriculture, tell us how we can build such a structure:

The principle behind such a construction is quite simple, the heat during the day is "stored" so that an optimal temperature is maintained overnight. Thus, a constant temperature is maintained 24/24, and vegetables such as salad, tomatoes, cabbage or broccoli can be grown in winter.

First of all, a rectangular pit about 2.5 m deep is dug. It is up to the grower to decide how deep, long or wide the construction will be depending on how many vegetables he wants to grow. A very important detail is the position of the sun, so choose a place as bright as possible and where the sun beats all year round.

A thick earth wall at the back of the building and a much smaller wall at the front provide the necessary angle for the roof, which can be made of plastic foil, glass or, depending on the budget, polycarbonate.

Also in relation to the possibilities of the cultivator, the walls can be made of stone, earth or other natural materials dense enough to absorb large amounts of heat.

It must be borne in mind that the north wall of the greenhouse must be higher than the south, because in this way all the heat of the sun will be captured in winter, and in summer it will reflect the sun.

Before adding the fertile soil on which the plants will practically grow, pour at least 30 cm of gravel over the entire base of the greenhouse. It will have the role of draining the excess water from the underground greenhouse.

Water infiltration into the walls or into the "floor" can be destructive to the greenhouse because the walls will collapse, and soil moisture will negatively affect plant growth and especially favor vegetable diseases. Therefore, there are precautions that must be taken into account when it comes to waterproofing, drainage and ventilation of the building, while it is correctly aligned with the sun's rays.

According to the authors of the project, the ideal place to build an underground greenhouse can be a small plot of land, and the construction itself can cost 250-300 dollars! At the same time, the underground greenhouse pays off very quickly - this is an excellent method, suitable for both farmers and producers who intend to grow products for sale all year round in areas with cold climates.