Headed Cabbage Climatic Requirements - Cut head with Leaves of Brassica oleracea var. capitata
Cut head with Leaves of Brassica oleracea var. capitata

Headed Cabbage - Headed Cabbage Climatic Requirements

To the question of which are the Headed Cabbage climatic requirements for its cultivation, aspire to give an answer to the following article.

This is the second one of an endless series of totally useless articles around Headed Cabbage (Brassica oleracea var. capitata), aimed at disorienting the new grower concerned and confusing the experienced one.

Is the knowledge about the appropriate climate for the cultivation of Headed Cabbage useful?

No, if the interested person intends to cultivate or cultivate in the Alpha of the Centauri. If, on the contrary, it intends to cultivate or cultivate on the planet Earth, yes.

Although the cultivation of Headed Cabbage is generally considered to be one of the easiest, the cultivation of quality Headed Cabbage is not.

Why;

Let’s leave something for the next (totally useless) article.

The knowledge from the producer of the influence of the climate on the cultivation of the Head Cabbage, is crucial for its successful outcome.

Headed Cabbages in the Field close to Harvest
Headed Cabbages in the Field close to Harvest
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The Headed Cabbage Climatic Requirements

Headed Cabbage (Brassica oleracea var. capitata) is characterized as a cool season crop. As a result, the Headed Cabbage climatic requirements for its succesfull cultivation are met at the temperate regions of the planet where winter is cold, humid and low temperatures prevail, while the summer is cool. In these areas it can be grown almost all year round.

Bearing in mind, however, that the Headed Cabbage, at least in terms of temperatures, develops and yields to a remarkably wide range of values, it can be cultivated in those parts of the tropical and subtropical regions that the individual climatic type is analogous to temperate.

In areas where the climate is purely Mediterranean, the cultivation of the Headed Cabbage can take place in the autumn and winter.

With regard to rainfall, the minimum annual rainfall for Cabbage is 500 mm while the average relative humidity is between 60 and 90%.

Aa for the photoperiod Headed Cabbage is a neutral photoperiod plant.

Headed Cabbage Climatic Requirements

Headed Cabbage Climatic Requirements - Well-formed Head of Brassica oleracea var. capitata
Well-formed Head of Brassica oleracea var. capitata

Headed Cabbage & Temperature

One of the most important climatic parameters in all types of farming is the temperature, both air and soil.

For the Head Cabbage, the appropriate air temperature is that of its range between 5 and 24 °C (41-75 °F), expressing the average monthly values, with optimal growth temperatures between 15 and 18 °C (59-64 °F).

Any deviation from this range affects both the yield and the quality of the Headed Cabbage. How much or little it affects depends on the genotype of the cultivated Headed Cabbage and the degree of deviation from them.

For example, air temperatures of 30 °C (86 °F) or greater, every 10 days, decrease the expected yield by 10%. On the other hand, for wintering cabbage crops, their exposure to light frost improves their taste and therefore helps to produce high-quality products.

A favorable condition for the Headed Cabbage cultivation is also considered to be the marked deviation between daytime and nighttime temperatures.

Headed Cabbage Climatic Requirements

Development of Headed Cabbage before Formed Head (Brassica oleracea var. capitata)
Development of Headed Cabbage before Formed Head (Brassica oleracea var. capitata)

Effect of Low & High Temperatures on Headed Cabbage

Headed Cabbage as a cool season crop withstands low temperatures. The exact limit of crop tolerance to them depends on the variety, the hardening of the plants as well as the stage of their development.

For most varieties of Headed Cabbage (Copenhagen type), their exposure for a short time at minimum temperatures between -5 to -6 °C (23-21 °F) does not adversely affect them.

Some other (like the January King type) can handle without damages even lower minimum temperatures between -9 to -10 °C (16-14 °F).

In all cases of low temperatures, the younger Headed Cabbage plants are more tolerant compared to the older ones, as are those which are hardy compared to the non-hardy ones.

However, if the temperature drops below -5 °C (23 °F) for more than one month, the crop damage is irreparable.

In terms of high temperatures, from 25 °C (77 °F) and above, the plants are still growing but at a slower rate, therefore there is a delay in the formation of the heads.

The high temperatures in addition to the delay also affect the quality of Cabbage’s heads.

Combination of prolonged high temperatures with water deficiency results in lesser growth of plants and formation of heads with far fewer leaves.

Combining prolonged high temperatures with water sufficiency results in the creation of more robust plants and the formation of very loose heads.

Headed Cabbage Climatic Requirements

Headed Cabbage Climatic Requirements - Headed Cabbage (Brassica oleracea var. capitata) in the Field
Headed Cabbage (Brassica oleracea var. capitata) in the Field

Headed Cabbage & Bolting

Even if the appropriate area for the Headed Cabbage climatic requirements is properly selected, sometimes nature insists on ignoring human toil.

A typical case of such inappropriate behavior of nature is the phenomenon of bolting. What is bolting will be perceived by the following.

Headed Cabbage is a biennial plant – of a two-year biological cycle. This generally means that the first year grows vegetative, while the second year of reproductive growth occurs, where the development of the flowering stem and the production of flowers, fruit and seeds are observed.

However, it sometimes happens that the Headed Cabbage blooming in the first year, which results in the economic destruction of the crop, since no marketable heads are formed.

Headed Cabbage Climatic Requirements

Headed Cabbage Climatic Requirements - Artistic Representation Of a Headed Cabbage Plant
Artistic Representation Of a Headed Cabbage Plant

The Occurrence of Bolting

The occurrence of this phenomenon, bolting, is mostly related to temperatures, while the genotype of cultivated plants determines the degree of vulnerability.

In order to manifest the bolting phenomenon of Headed Cabbage,  must:

  1. Plants have formed from 4 to 15 real leaves
  2. The stem shall have a thickness of at least 6 to 8 mm
  3. Temperatures for at least one month are between 0 and 12 °C (32-53 °F)

The manifestation of the phenomenon, in addition to the economic destruction of the crop, results in the economic disaster of the producer.

Headed Cabbage Climatic Requirements

Headed Cabbage Climatic Requirements - The Inflorescence of Headed Cabbage at the 2nd Year
The Inflorescence of Headed Cabbage at the 2nd Year

References

The Art Blakey & The Jazz Messengers unknowingly present the References to the article entitled "Headed Cabbage Climatic Requirements" with the composition It’s Only a Paper Moon.

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