Traditionally, onion cultivation is divided into two stages: planting seeds, the so-called nigella, and the subsequent planting of the resulting onion sets from which, in fact, full-fledged bulbs grow. When the leaves that have appeared on the plants dry up, the bulbs that have grown up to 1-2 centimeters in diameter are pulled out, dried in the sun for a week and carefully crushed (but in no case do they break off) the roots and tops.
Planting onion sets begins in late spring, when the temperature reaches 18 degrees. As a rule, this time falls on the first third of May, however, depending on the climatic conditions of the area, the timing of planting onion sets can be shifted by several weeks. At the same time, the timely planting of onions in the ground is of great importance for the further development of plants and, as a result, obtaining a good harvest. So, late planting negatively affects the yield and quality of the bulbs, and early planting threatens with unwanted flowering and the formation of arrows (however, the likelihood of this can be somewhat reduced if the seedlings are stored at temperatures no higher than 18 degrees in winter). In order for the planted onion to take root and germinate faster, it can be pre-soaked in a solution of a special growth stimulator.
It is necessary to plant the seed so that there are 4-5 centimeters of free space between each bulb in a row, and 15-20 centimeters of free space between the rows. In this case, the bulbs must be placed with their bottom down and be covered with a thin layer of soil.