Darkness is their enemy, highlighting pepper seedlings at home

Darkness is their enemy, highlighting pepper seedlings at home

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To obtain strong, healthy seedlings of pepper, it is necessary to provide it with 12 hours of daylight.

When sowing it early at home, it is impossible to do this without additional illumination.

Therefore, pepper seedlings must be supplemented.

Why highlight pepper seedlings

A feature of this culture is a long vegetative period. Therefore, the sowing of pepper is done before all other plants, at a time when the daylight hours are not yet long enough. Plants need to develop at least 12-14 hours of lighting per day, while in winter they can receive lighting only 50% of this norm.

Pepper seedlings, which did not have enough light in the early stages, it turns out to be elongated, with a thin stem, elongated internodes and insufficient foliage... This is due to the fact that photosynthesis slows down under such conditions. Plants begin to ache and may even die.

ADVICE. In cloudy weather, for maximum illumination, you need to install a reflective screen on the side opposite to the window.

The right pepper lamps

The normal development of pepper sprouts occurs at an intensity at least 20,000 lux... Natural light rates from February to March are only 5000 lux, which is clearly not enough for plants. However, not all lamps are suitable for getting as close to natural light as possible.

The processes of photosynthesis of plants are influenced not only by the light itself, but by specific spectrum of rays... The sun's rays are composed of waves of different lengths and colors, and they contain all the radiation spectrum necessary for plants. Wherein each part of the spectrum has a different effect per plant:

  • Red rays promote seed germination and stimulate flowering.
  • Blue and purple affect cell formation.
  • Green and yellow is reflected from the leaves and does not affect the development of plants.

It is the yellow light that underlies the emission of incandescent lamps, which some gardeners use in the old fashioned way to highlight seedlings. This is absolutely wrong... Moreover, these lamps contain a lot of infrared rays, which means that the seedlings under them overheat and stretch out.

The best option for supplementary lighting of pepper seedlings is the use of phyto or fluorescent lamps... LED lamps are now on sale, specially designed to illuminate seedlings at home.

The phytolamp range is 400-700 nm, and this has a beneficial effect on plants, since they need just such a light range.

Advantages and disadvantages of different types of lamps

The modern industry offers a wide range of lamps suitable for illuminating seedlings. All of them differ in emission and power spectrum, therefore, their selection must be carried out, based on the specific conditions in which the pepper is grown.

Sodium lamps

Their advantage is high radiation efficiencywhich stimulates photosynthesis. Such lamps give a powerful luminous flux and serve for a long time.

They give orange-yellow radiation, which does not cause eye irritation, therefore it is recommended to use them at home.

The disadvantage of such lamps is their high price... In addition, for their application installation of a relay is desirable to control the intensity of the glow.


Refers to fluorescent lamps and give a cold light... Emitting them low-power.

therefore installation of several pieces is required at once to ensure the required amount of lux. For highlighting seedlings on a windowsill 1 m long. you need to install one lamp of 80 watts or two of 40-50 watts.

In the spectrum of such lamps insufficient red spectrum... Their spectrum has a depressing effect on plants, so they application is not recommended.


Economical and durable option backlights for home conditions. Many of them are equipped with mirrored reflectors that helps to achieve maximum effect with minimum energy consumption... Such lamps practically do not heat up, therefore completely exclude the possibility of leaf burns when applying them.

Phytolamp radiation has a lilac-pink color, what favorably affects the development of plants... However, it is this feature that is unfavorable for human eyes, therefore, in room conditions it is necessary to use phytolamps with caution.

Sodium metal halide

Work in a warm radiation spectrum and favorable for the growth of seedlings... They are economical and easy to use. Their disadvantage is minimum blue emissionwhich inhibits the growth of plant cells and prevents the stem from pulling out.

The use of modern lamps to illuminate seedlings makes it easier to grow... With their help plants receive exactly that part of the light spectrum that is necessary for the growth and development of pepper seedlings.

Lamp power and their location

Calculation of the number of light sources is an important stage in the organization of backlighting. Pepper seedlings should be illuminated with lamps at the rate of 200 W per 1m2.

The backlight should be at a distance of 20 cm from the crown of the plants... As the growth progresses, the lamps located above the seedlings should be raised. Special phytolamps are placed at a height of 15 cm from the upper leaves plants.

For how long to turn on the backlight of the pepper

Time to turn on the backlight over pepper seedlings depends on her age:

In the phase of cotyledons you can leave the lamps on for three days without a break... This technique will allow the start of a sharp growth and development of seedlings.

When the first true leaves appear the length of daylight hours for pepper should be 14-16 hours a day.

In February and early March more expedient turn on the backlight in the morning and leave it in working order until 7-8 pm... Turning on the lamps in the morning and in the evening leads to the fact that in the daytime the sprouts experience a lack of lighting. This is evidenced by their inclination towards the window.

In April the intensity of the light rays from the window during the daytime is sufficient, and the lamps can be turned on only in the morning and evening hours... Backlight mode at this time from 6 to 12 o'clock and from 16 to 19... If you do not have the opportunity to turn off the lamps during the day, it is advisable to use a timer.

IMPORTANT. It is impossible to supplement the seedlings around the clock, this dramatically slows down their growth, since the plants need rest.

A few tips for increasing the illumination of pepper seedlings

So that the seedlings do not suffer from a lack of light, you can apply some methods of increasing the illumination:

  • Grow pepper seedlings in separate pots, and move them away from each other as they grow. The desire to put more plants on one window leads to that. That from a large number of elongated bushes, you will receive a minimum of fruit in the fall.
  • Wash the windows... Dirty glass blocks about 5% of the sun's rays that your seedlings need.
  • As soon as the weather is warm take the boxes out to the balcony during the day, or place them near an open window.
  • Take care of correct and timely highlighting pepper seedlings.
  • Arrange the seedlings in several rows on top of each other with the help of shelves. The closer the plants are to the glass, the more rays they will receive.
  • If you do not have the opportunity to highlight pepper seedlings, sow it laterchoosing early maturing varieties.

The correct organization of the light regime when growing peppers is a prerequisite for obtaining a rich harvest in the autumn.

Useful materials

Read other articles on pepper seedlings:

  • Correct cultivation from seeds and should they be soaked before sowing?
  • How to grow black peppercorns, chili, bitter or sweet at home?
  • What are growth stimulants and how to use them?
  • The main reasons why the leaves of the shoots curl, the seedlings fall or stretch, and also why the shoots die?
  • Planting dates in the regions of Russia and the peculiarities of cultivation in the Urals, Siberia and the Moscow region.
  • Learn recipes for yeast-based fertilizers.
  • Learn the rules for planting bell and hot peppers, as well as how to dive sweet?
  • How to properly prepare seeds and soil before sowing? As well as the rules for watering, feeding and picking young shoots.

In conclusion, we bring to your attention a form on how to properly highlight pepper seedlings:

Watch the video: 5 Pepper Growing Mistakes to Avoid (August 2022).