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Delicious, slightly spicy and healthy, radishes are popular all year round. It is unpretentious, cold-resistant and has a high yield, so it can be grown all year round. This is the first vegetable that appears on the table after winter, when the body especially needs vitamins.
The article contains information on how to prepare seeds for planting, how to sow radishes and how deep to plant them in order to quickly and correctly grow them in greenhouses and how to care for them, can they be planted in a cassette way. Also, answers to such questions: why the radish is pulled out or goes into the tops and for what reasons it does not tie and does not grow, as well as why it cracks.
Features of the
When growing radishes in a greenhouse, you should adhere to the following rules:
- Only use varieties that are intended for greenhouses. It is highly likely that ground seeds will shoot in greenhouse conditions.
- Do not sow too thick. This is the main mistake of novice gardeners, because sometimes too densely sown radishes cannot be saved even by thinning.
- Greenhouse radish needs to be fed with compost or humus.
- The soil for spring planting must be prepared in the fall (remove plant residues, dig up and apply fertilizer).
- It is possible to install a heating system and artificial lighting in the greenhouse.
- The crop in the greenhouse is well protected from bad weather (wind, precipitation, frost).
Reference! Growing early-ripening radishes in greenhouses, the crop can be harvested once a month and sown again.
Differences from outdoor cultivation
Unlike the year-round cultivation of radish in a greenhouse, in the open field, radish is sown from late April to September. Root crops perfectly withstand small night frosts, but the low daytime temperature (up to +8) greatly slows down the seedlings.
Before the very frosts, you can carry out a sub-winter sowing to get an early harvest in the spring.
The main difference is that when grown outdoors, the gardener is highly dependent on weather conditions, sharp and long cold snaps can have a bad effect on seedlings and crop quality. And when grown in a greenhouse with heating, there is no dependence on the weather.
The vegetables grown in the greenhouse are more environmentally friendly than those from the open field, since the greenhouse protects against various natural and chemical contaminants.
Does it matter what material the greenhouse is made of?
There are many materials for greenhousesand each has its own merits and demerits.
- transmits light well;
- has good thermal insulation properties;
- easy to clean.
- in the hot sunny summer, it is unbearably hot in the greenhouse, since the glass acts as a lens
- it is quite heavy, so a powerful frame is needed;
- glass is fragile, and can crack under the weight of snow in winter, which will entail spending on its replacement.
- quick installation of the greenhouse anywhere without a foundation;
- diffuse sunlight, making the illumination more uniform.
- rapid wear and the need to completely change the coating after a few years;
- the formation of condensation, to which dirt adheres, which interferes with the normal light transmission of the material.
Has all the positive properties of glass and film.
- high transparency;
- good thermal insulation;
- strength, lightness and flexibility;
- attractive and aesthetic appearance;
- does not require replacement for many years.
- high price.
It's not hard to guess that polycarbonate greenhouses, having many advantages, will replace glass and polymer film greenhouses.
Variety selection rules
The main criteria for choosing a radish variety for growing in greenhouses:
- shade tolerance;
- keeping quality;
- resistance to shooting;
- lack of bitterness.
By the ripening time, you can choose the following varieties of radishes:
- Early ripening.
The main thing is that the radish variety is suitable for growing in greenhouses.
Planting time depending on the climatic zone and season
In the heated greenhouses of the Far North, radish seeds can be planted from the end of January. If not heated - in March - April. It is necessary to navigate by temperature (from 0 degrees at night to + 15 degrees during the day). Depending on the region, early radishes are sown when the soil has thawed 4 cm.
Planting radishes in winter is complicated by a lack of light, so additional lighting is recommended.
Attention! If frost suddenly broke out, and the greenhouse is without heating, additional arcs are installed on the beds, and covered with polyethylene.
Planting time for radish in the greenhouse:
- It is best to sow greenhouse varieties on April 10-15 (read more about the rules for planting radishes in a greenhouse in April here).
- Spring varieties cannot be sown in summer - root crops become tasteless and tough, arrows appear.
- Summer and autumn varieties are successfully sown from July 25 to August 5.
- Sowing in the winter - in early December.
Find out more about when to start planting and how to care for radishes here, and in this material you can find out when to plant a vegetable correctly and what the timing depends on.
Greenhouse radish varieties
Early ripening varieties:
- Ultra early red.
- 18 days.
- Early red.
- French breakfast.
- Gribovsky hothouse.
- Mokhovsky white.
Read more about greenhouse radish varieties here.
How much is growing?
There are varieties of different ripening periods:
- Early ripening varieties give a harvest in 20 days.
- The early ones can be harvested after 30 days.
- Mid-ripening ripens for 40 days.
- Late ones take longer than 40 days to mature.
Important! You can have a crop of radishes all the time by planting radishes of different ripening times.
Learn more about how much radish grows in the greenhouse, and when the first crop appears, learn from this material.
On average, depending on the variety, about 100 root crops weighing 20-30 grams each grow per 1 square meter, based on these figures, we can talk about a yield of 2-3 kg of radish.
Step-by-step instructions on how to grow properly
How to plant?
How to plant the seeds correctly? The planting scheme is simple: grooves are made with a distance of 10 cm, watered, and the seeds must be sown to a depth of 1.5 cm, an interval of 3-4 cm is made between the seeds.
The technology of planting radishes in a greenhouse is shown in this video:
For more details on how to properly plant radishes in spring in a greenhouse with and without heating - advice for gardeners, read here.
- Conditions of detention... The temperature comfortable for radishes is 15-20 degrees. Daylight hours should be no more than 12 hours, if more, then arrows begin to form. Therefore, in summer, radishes must be shaded.
- Watering... The soil should not dry out. With the cassette growing method, radishes are watered through the drainage hole from below. It is watered to a depth of 10-15 cm. So that moisture evaporates less, the soil can be sprinkled with humus or peat. After watering, the greenhouse must be ventilated, otherwise the plant will get sick with a black leg. How often to water the plants? It is necessary to water it with warm water, if the weather is hot, then every day, if not, then once every 2 days. Too much water is also harmful, the taste may deteriorate, the texture may become watery, or the plant may rot.
- Top dressing... The plant is fed only if the soil was not sufficiently enriched before planting or in autumn. It is fed with superphosphate diluted in water, urea and wood ash. Read more about how to feed the plant after germination in the greenhouse and in the open field here.
- Hilling... Radish needs to be huddled with peat or humus half with sand, when the skin cracks on the cotyledon knee. Then the root crop is harmful to the light.
- Harvesting and storage... In order for the radish to be stored for a long time, and the roots to retain their attractiveness, the radish must be watered in the evening, and in the morning to collect mature plants. The tops are cut 3 cm from the root crop, the roots must not be touched. The radishes collected in this way are stored for a long time in the refrigerator without losing their taste.
How to sow seeds in the winter in a cassette method for sale?
Correct planting of radishes in cassettes:
- Before planting, the cassettes must be treated with a disinfectant or heated in the oven.
- Seeds must be used large and well dried.
- Fertile soil is poured into each cell of the cassette.
- Seeds are planted in each cell one at a time, since radishes have almost one hundred percent germination, and are sprinkled with sand.
- Water each cell with a small amount of water every day.
- If the plant is grown in winter, then it needs to be illuminated for about 12 hours.
- Ripening is determined by the size of the root crop; after ripening, the vegetable is easily pulled out of the cassette.
When growing radishes for sale, it must be remembered that root crops are in greatest demand in summer and winter.
- If the radish is very stretched, then there is little light for it. Perhaps the glass in the greenhouse is dirty, or the radish is planted in the shade, or it needs to be thinned out.
- Radish cracks from excess moisture, especially if the radish is watered after a period of drought, or from a large amount of nitrogen fertilizers.
- The most common reason radishes go to the tops is late sowing. Summer is the worst time to grow radishes. There are several more reasons - poor loosening, radish did not thin out, heavy soil.
- The reasons that the radish is not tied up are compressed or acidic soil, thickening of the planting, high air temperature, in the first periods of growth the plant was not watered, excess fertilizers. In such cases, the radish goes into the tops, and root crops do not appear.
Due to the possibility of early sowing and early maturity, the juicy and tasty radish is the very first vegetable on the spring table. It is not difficult to grow in a greenhouse and can provide an opportunity to make money. After all, a root crop grown in a greenhouse by a caring gardener will be snapped up in winter!