Sample layers for a raised bed

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So, what to pour into a high bed - layers from bottom to top:

A metal mesh with a small cell or a layer of geotextile is placed on the bottom. Cardboard can be placed. The mesh and geotextile are protection against rodents and moles. Cardboard plays approximately the same role, but it is less effective.
Large wood remains: thick branches, twigs, even logs and bars. This layer serves, firstly, for drainage, and secondly, moisture accumulates in the wood. The drier the climate in your region, the more wood there should be. Moreover, the following wood layers too.
Shredded small branches, bark. Other coarse plant remains will do: corn stalks, straw. Their task is also dual. They store water, and also release heat and nutrients when decomposing. But when using corn stalks and straw, keep in mind that the bed will soon sink: these remains quickly rot, but the yield will be high, and you can add fertile soil on top.
Paper, thin cardboard. Usually lined with a thin layer. More often they use packing cardboard, because glossy paper is not suitable, as well as newspapers: the lead base of the paint is not at all what you need to fertilize the plants with. If you have old unnecessary burlap (natural), you can lay it down.
Layer of plant remains: leaves, grass, half-decomposed sawdust. Be careful with sawdust: it strongly acidifies the soil. So sprinkle it under plants that like acidic soil, or neutralize the acidity by sprinkling it with a good layer of ash.
Fertile land.
A good portion of mature compost can be croatia mobile database to the last two layers, as well as sprinkled into the deeper layers. This will speed up the "readiness" of the raised bed for planting.

Read here about how to make a pond in your dacha with your own hands, and this article describes how to turn it into a fountain.

When is it better to do it and what to plant
It is better to fill the high bed in the fall. During this period, there will be enough "material" and the processes inside will gain momentum over the winter. In this case, you can plant in the spring and hope for a high harvest. You can do it in the spring, but it is unlikely that there will be any significant differences in the yield: the processes have just begun and will not be able to have a noticeable effect on the fertility of the backfill. Although you will definitely feel the difference in the amount of water for irrigation: much less water is required.

One of the options for a raised bed: metal mesh and reinforced polyethylene film

Plant rotation
In the year of the high bed arrangement, you can plant plants that require high fertility: cucumbers, squash, zucchini, pumpkin, any kind of cabbage, eggplant, tomatoes, sweet pepper. The next year, you can plant greens - spicy-aromatic and leafy. Root crops feel good in the second year.