I'll tell you how to build warm beds with your own hands, where you can then grow any vegetables.
We will need: You'll need 15-centimeter-wide cut boards, aluminum corners for joining the boards, and 5-centimeter-long screws. Pre-treat the boards with an antiseptic. That's all you need to make the boxes for a warm, versatile garden bed. Once you've prepared everything, you need to decide where you'll place your garden bed or beds. The best location, of course, is one with plenty of light and good breeze.
To fill the heated beds, we place various scraps of vegetation from the garden and orchard at the very bottom. I used branches from pruning large bushes and trees, which I chopped up with a hatchet or pruning shears. Then we add straw, dry grass, and leaves. To ensure the bed warms up properly, we add manure, as manure emits a lot of heat when it rots. Finally, we cover everything with soil. We don't fill it all the way to the top, but leave a slight lip to allow for easy watering and prevent water from running off. Next, we water the entire bed thoroughly and let it settle.

After a while, the manure will begin to rot, and the soil will become warm. When the time comes, you can plant anything you like in this bed. It's very convenient and practical. I've forgotten what weeds are; they simply don't grow, and you don't need to dig it up every year.
Now you know how to make your own heated garden beds for growing vegetables. Wishing you a bountiful harvest!

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Irina
The most important thing is not to put in too much manure, otherwise all the vegetables will simply burn from the heat.
Andrey
I do it a little differently - steamed sawdust on the bottom, then I put leaves, they are rotted and a bit like manure, and the third layer is specially prepared soil - earth, manure, peat mixture - there are many different ways to prepare this mixture.