Planting onions in the spring on greens (on a feather) in a greenhouse: when to plant, how to grow from seeds, from sets, from bulbs

Any fresh greens are especially popular in winter and spring, when gardens are still covered with snow, and not everyone has heated greenhouses. True, if we talk about forcing onions to grow, then onion varieties are least suitable for winter, since they require more heat and light than their perennial varieties. Planting onions in the spring on greenery in a greenhouse is more justified, since it often allows you to do without additional heating and lighting and ultimately get much better results in terms of yield.

Features of growing onions in a greenhouse

For normal and fruitful forcing of onions, two basic conditions are vital: temperature and light.Of course, the humidity and quality of the soil also play a role, as well as the quality indicators of the seed material, but the latter will be discussed in detail in the next chapter.

Forcing onions into feathers can occur at temperatures from + 8 ° C to + 25 ° C. At the time of planting, it is desirable that the temperature be within + 18-22 ° C. Of course, in the middle zone in a greenhouse such a temperature can only form during the daytime. At night you will most likely need to use additional heating. To maintain heat at night, it is important to pay attention to good thermal insulation of the greenhouse. This issue should be taken into account at the stage of its construction, so as not to skimp too much on the thickness of the greenhouse covering material.

To simplify your task, it is advisable to use racks or special tables raised above the ground for planting onions. After all, the air in greenhouses warms up much faster than the soil below, and this will reduce heat costs for heating. In addition, racks can provide an increase in planting area if they are made in two or even three tiers.

In the first 8-12 days after planting, onions practically do not need light, and then 12 hours of daylight is enough for good development. A similar level of lighting can be provided without installing additional lamps if the onions are planted no earlier than the beginning of March.

To successfully force onions into feathers, the air in the greenhouse should not stagnate, and the air humidity inside should not be too high. These factors together have a depressing effect on the growth of greenery and can lead to various unpredictable diseases. To reduce humidity, you can adjust the temperature (lower it).You can use a regular household fan to circulate air, and in warm weather, be sure to ventilate the greenhouse.

Watering onions grown for harvest is vital only at the very beginning of the process, after planting. Then a lot depends on the temperature and conditions that will be in the greenhouse.

The best varieties of onions for greens for growing in a greenhouse

If growing onions for harvest is to become one of the means of income, then choosing the most suitable variety is the basis for possible profitability. You should choose from those varieties that will be either multi-lobed or multi-primed. There are several varieties that are most advantageous to use for forcing in greenhouses.

Karatalsky

One of the best varieties for growing in greenhouses as a feather, since it is both multi-primed and multi-nestled. In addition, he has a very short rest period and is able to wake up early. Having planted it, you can always be confident not only in the quality of the harvest, but also in the early stages of its receipt.

Rostov local (Lugansk)

Local Rostov onion also shows good results when grown for feathers. It has at least three primordia and is characterized by an average dormant period. This variety has another remarkable property - the impressive fleshiness of the feather. When planting large bulbs with a diameter of more than 5 cm, the harvest can be more than decent - up to 15-18 kg per 1 sq. m.

Stuttgarter Riesen

Although this onion has a long dormant period, it is ideal for forcing greens in a greenhouse in the spring. More than three rudiments can always be found in it, and it forms a powerful, beautiful and healthy feather. Plus, it's pretty easy to get.The variety is well known and is found almost everywhere.

Egyptian

This is a rather conventional name for onions for growing onions. Since it is of imported origin, it may not be too easy to obtain. But it has many buds and grows well.

Chalcedony

Although this onion usually has no more than 2-3 rudiments, it is distinguished by its unpretentiousness and good growth, and most importantly, it is found everywhere. It will not be particularly difficult to find its seeds for planting. The Bessonovsky Urogony, Danilovsky 301 and Strigunovsky Local varieties have approximately the same properties.

When can you plant onions in a greenhouse?

In the conditions of the middle zone (latitude of the Moscow region), it hardly makes sense to plant onions for forcing in a greenhouse before the beginning of March. Planting earlier will lead to a decrease in yield, or an increase in the cost of growing green feathers.

In more southern regions, of course, it is allowed to plant onions earlier, during February.

Preparation of soil and planting material

Onions can be planted both on a soil substrate, the basis of which is ordinary garden soil, and on artificially created soil, the basis of which is sawdust. For beginners in this business, it is advisable to use ordinary soil, which is located in the greenhouse. You just need to mix it with humus or compost in the fall, adding a bucket of these components per 1 square meter. m. soil.

You can even grow onions for harvest in boxes placed on the surfaces of shelving. In this case, the thickness of the soil layer in them is approximately 5-6 cm. If the boxes are sealed or covered with plastic film, then it is necessary to provide drainage holes in them to drain excess liquid when watering.Otherwise, the bulbs may simply rot from excess moisture.

Preparing the onion itself involves several procedures. To begin with, before planting, the onion must be placed in a warm room for several days and allowed to warm up. After all, onions are usually stored at a temperature of about + 5 ° C so that they do not germinate.

Then the bulbs need to be sorted by size. For forcing, you can use bulbs with a diameter of 3 to 8 cm. Larger bulbs may no longer give the expected effect of increasing the yield, and smaller ones will form feathers that are too thin and weak.

It is best to have bulbs of approximately the same size in the box. In this case, germination will be more uniform. To speed up the process, as well as for more beautiful and uniform germination of the feathers, the necks of each bulb are cut off, leaving approximately ¾ of the bulb itself.

No less important is the soaking procedure. In extreme cases, you can do without it, but it significantly speeds up the germination process and, most importantly, disinfects the planting material. Onions are usually soaked directly in bags in warm water at a temperature of + 50 ° C with the addition of potassium permanganate.

Attention! The soaking period can range from several hours to a day.

Planting onions on greens in a greenhouse

Planting onions on feathers in greenhouses can theoretically be done both with the help of ready-made bulbs and with seeds - the so-called nigella.

Seeds

This method is incredibly labor-intensive and time-consuming. Therefore, it is suitable only for those who do not have the funds to buy ready-made bulbs for planting in the required quantity, but who have a lot of free time and a desire to tinker with onion seedlings.

In this case, usually in the spring, onion seeds of a suitable variety are sown in boxes and the seedlings are cared for for a whole year until next spring. In the summer they are planted more freely, so that by late autumn they can turn into bulbs of more or less decent size. Then they are dug up and stored in a cold place until spring, when they can be planted in the usual way, which will be described below.

Bulbs

When growing feathers from bulbs in greenhouses, the bridge planting method is most often used. In this case, per 1 sq. m. usually spend about 25-30 kg of finished bulbs. This amount is approximately one standard mesh bag of onions.

How to plant onion sets on greens in a greenhouse

With the bridge method, pre-prepared bulbs are planted almost on the surface of the ground with the cut side up, deepening them only 1 cm. Moreover, the planting density should be such that almost all the bulbs are in contact with all their parts with each other. The bulbs, figuratively speaking, line a bridge, hence the name of this planting method. Thus, a large amount of space is saved, which is especially important for small areas in compact greenhouses.

When landing for the first time, it can take quite a long time. With gaining experience in landing 1 sq. m. in this way should take no more than 30 minutes for one person.

Attention! After planting, the onions are thoroughly watered and left in this form until the first sprouts of greenery appear.

How to grow onions for greens in a greenhouse

There are no particular difficulties observed in the process of caring for a growing green feather. Rooting of the bulbs usually occurs within the first 10 days. Then the first green shoots appear.During this period, by changing the temperature, it is possible to regulate the intensity of onion growth. For example, if before the holidays it needs to be “restrained in growth” a little, then the temperature is lowered, but so that it drops no lower than + 8 °C. As the temperature rises, on the contrary, the rate of feather growth accelerates significantly. But there is a limit here too. When the temperature rises above + 25 °C, the tips of the onions’ leaves may begin to dry out, which has a negative effect on the presentation of the vegetable.

Watering

Watering is only necessary when growing onions in fairly warm conditions, when the soil shows obvious signs of drying out. It can be carried out either from a hose or from a watering can. The temperature of the water does not matter much, but it is still better to use settled water rather than ice water.

Weeding and loosening

There is no need for weeding or loosening, since the bulbs occupy absolutely the entire soil area. But periodic sampling of bulbs affected by diseases or beginning to rot is simply necessary.

Top dressing

Usually, if the feather onion was planted in soil fertilized with humus in the fall, then it does not need any additional feeding. But periodic spraying with Fitosporin will allow you to prevent possible diseases and save most of the healthy bulbs from possible infection.

Harvesting

In general, a sign that onions are ready for harvest is the length of the leaves. It should reach at least 25-30 cm. But it is better to wait for the length of the onion feathers to be from 40 to 50 cm. This will allow you to get the maximum green harvest by weight.

Comment! The length of the feathers is calculated not from the bulb, but from the surface of the substrate.

Typically in spring, the period from planting to harvest averages about 30 days.It can vary from 20 to 40 days.

The harvesting process itself consists of cutting the onion at the root along the very surface of the substrate with a sharp knife. Then a cut is made from the bulb at the very bottom. The bulb is pulled off, and a clean and dense green feather remains in your hands. The white part is cleared of the slippery film and placed in a prepared box. Each bulb is processed in the same way. The old onion is thrown onto the compost heap.

It should be noted that the yield on average ranges from 25 to 65% of the weight of the original bulbs. That is, if 100 kg of onions were planted, then you can get from 25 to 65 kg of green onions. Productivity is most determined by the number of buds in the variety used. Thus, from one square meter in a greenhouse you can get from 8 to 20 kg of early green onions.

Pests and diseases

Pest or disease infestations are much easier to prevent than to treat. And this statement is more than true in relation to growing onions. Since it only lasts about a month, no treatment makes sense. All you need is:

sort the bulbs very carefully before planting;
carry out the disinfection procedure before planting;
use Fitosporin regularly;
periodically inspect the plantings and remove any bulbs that begin to deteriorate;
Ventilate the greenhouse regularly and use a fan to circulate air.

Conclusion

Planting onions in the spring on greens in a greenhouse can provide effective help in vitaminizing the family. And it can also serve as a good auxiliary income. And if everything works out and the product is in demand, then you can, if desired, expand the acreage and take this business seriously.