Beauty and practicality: what color of polycarbonate is better to choose for a greenhouse?

Beauty and practicality: what color of polycarbonate is better to choose for a greenhouse?

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Who would have thought ten years ago that we would be able to influence the growth and fruiting of horticultural and horticultural crops with the help of the colors of the greenhouse cover ?!

In addition to regular care the right polycarbonate color will help grow strong plants and create the necessary conditions for a high yield.

Let's try to figure out what color polycarbonate is better to use for a greenhouse.


Plants need sunlight to grow, bear fruit and reproduce. We know this from school botany lessons. It is impossible to achieve pure sunlight in a greenhouse., because any coating, one way or another, absorbs some of it.

Can the greenhouse be covered with colored polycarbonate? It has always been believed that the material for covering greenhouses should be as transparent as possible.

Recently, however, gardeners have increasingly begun to use colored polycarbonate for this purpose, while choosing yellow, orange and red shades. Why choose polycarbonate for greenhouses? What's the best color?

Effect of color on plants

What color of polycarbonate is best for a greenhouse? Light spectrum represents electromagnetic waves of different lengths. Some of them have a destructive effect on plants, others have a beneficial effect.

It all depends on how this or that light is absorbed by chlorophyll - one of the main participants in photosynthesis. Electromagnetic wavelengths are measured in nanometers (nm).

Wavelengths of 280 nm are hard ultraviolet, it is invisible to our eyes and has a negative effect on both humans and plants. It sheds leaves, growth points die off. The advantage of polycarbonate is that it completely absorbs these rays.

The ultraviolet part of the spectrum with a wavelength of 280 to 315 nm helps to harden plants and increases their resistance to cold. Electromagnetic waves in the 315-380 nm range improve metabolism and promote growth. Polycarbonate transmits these ultraviolet rays.

Green part of the spectrum almost not absorbed by plants, despite the fact that it is in the "green" part (550 nm) that the maximum of the continuous spectrum of sunlight perceived by the eye is located. Under the influence of this color, the plant begins to decay, slow down development and stretch.

Shades of purple-blue (380 - 490 nm) are beneficial for development and growth. The color purple affects the formation of proteins and the growth rate of plants. In such a spectrum, it is good to grow crops with short daylight hours, they bloom faster.

Blue color has a beneficial effect on the growth of green mass - stem and leaves. If the greenhouse lighting lacks the blue hue of the spectrum, the plant may begin to stretch strongly to receive its dose of light.

For growing fruit crops optimal is the range of orange (620-595 nm) and red (720-600 nm) colors. They are most actively absorbed by the light-sensitive pigment, chlorophyll, and contribute to the formation of hydrocarbons. This radiation supplies the plant with energy for photosynthesis, and affects the growth rate.

The plant pigments, which are most sensitive to red color, are responsible for root development, flowering and fruiting. The plant grows well and bears a rich harvest. However, excessive amounts of this spectrum can slow down flowering.

Polycarbonate transparency

The choice of polycarbonate today is extremely wide, as well as the scope of its application. Among the technical characteristics of the material, light transmission plays an important role, especially when used as a covering for greenhouses.

Polycarbonate is a flexible material, when covering it light transmission depends from the bend radius and ranges from 82 to 90%.

Matte colored polycarbonate won't work to cover greenhouses, it transmits less than 65% of the sun's rays. It is most often used for awnings where shade is desired.

Cellular polycarbonate transparency also depends on the thickness of the sheet, which can be from 4 to 25 mm. The thicker the material, the less light it conducts. For greenhouses, a thickness of 4 to 16 mm is recommended. The choice depends on the type of greenhouse.

For summer and year-round use in warm regions, you can limit yourself to a sheet of 4-8 mm. For moderately cold (down to -26 ° С) - 16 mm. The light transmittance of this transparent colored polycarbonate is 70%. Non-color transmits 92% of light.

Greenhouse, as a decoration of a summer cottage

A greenhouse made of colored polycarbonate is already a decoration in itself. A bright spot among the country greenery is always pleasing to the eye.

If you want a design solution, you can plant decorative bushes around it and lay out a beautiful path leading to the greenhouse.

To decorate a greenhouse made of non-colored transparent polycarbonate you can use the picture, if the greenhouse is directed towards the site.

Drawing can only be done on this part of the greenhouse. The roof and side walls must be kept clean so as not to obscure the interior.

A photo

Here in the photos are examples of colored greenhouses and greenhouses with a picture.

Polycarbonate has practically replaced glass as a coating for summer cottages and industrial greenhouses.

If you combine colors correctly when building a greenhouse, taking into account the influence of different parts of the light spectrum on plants, ideal growing conditions can be achieved vegetables and other crops.

Watch the video: Installing TUFTEX PolyCarb Clear Panels on Greenhouse (May 2022).