Disinfection of polycarbonate greenhouse in autumn


It is possible to wash the polycarbonate greenhouse in the autumn with the help of various means. Some of them are sold in finished form in specialized stores for gardeners, others can be diluted and cooked on their own. It is only important that washing and disinfection be done, since quite a large amount of toxins accumulate on the walls and frame during the season, as well as harmful microflora and pathogens of various infections.

Greenhouse care after harvest

Polycarbonate greenhouses appeared relatively recently, but quickly gained popularity among amateur gardeners and among agricultural producers. Polycarbonate is quite strong, durable and reliable, and the lightweight frame of the profile metal pipe makes the entire structure mobile. However, during the garden season, dirt accumulates on the walls and bearing elements, insect waste products, various pathogenic microflora, which multiply vigorously in conditions of elevated temperature and humidity.

Autumn care for the greenhouse includes several mandatory activities. These include:

  1. Harvesting tops, fallen leaves, plant debris after seed crops.
  2. Digging the soil, cleaning weeds and larvae of insect pests.
  3. Disinfection or replacement of the soil.
  4. Washing of walls and supporting structures of the greenhouse.
  5. Disinfection of the inner surface of the greenhouse.

If the shelter is not used in winter, various auxiliary systems can be dismantled, if any have been installed (lighting, drip irrigation, etc.). The less the internal space is cluttered, the easier it will be to clean and disinfect it.

Do I need to care for the greenhouse

If you do not wash the greenhouse from polycarbonate in the fall and do not remove all organic residues from it, next year the greenhouse crops will be provided with a whole “bunch” of various diseases. It is very important to carry out a kind of general cleaning at this time, while disinfecting not only the greenhouse soil, but also all the elements of the structure.

When is it best to wash the greenhouse: autumn or spring

Washing and disinfection of polycarbonate greenhouses is best done in the fall. This is due to many factors. One of them is free time, which is much more in the fall, which means that all work on the treatment and disinfection can be carried out slowly and with the desired quality.

It is also important that chemicals that can be used for washing and disinfection, even if they fall into the soil before spring, are guaranteed to decompose and not cause any harm to future crops.

Do I need to wash the greenhouse after harvesting

The time after harvest in the fall is the most optimal time for cleaning and disinfecting the greenhouse. During this period, it is easier to remove all organic residues from the walls and the frame, if you leave them until spring, they will turn to stone and it will be much more difficult to scrub them. Here is a direct analogy with dirty dishes, which is much easier to wash after a meal than to soak dried food residues.

Preparation of the greenhouse for disinfection

In order to qualitatively disinfect the internal space, it is necessary to remove all unnecessary from the structure, leaving only bare walls if possible. Before starting the treatment, it is necessary to remove the garters, remove the nets, and remove the tapestries. If auxiliary systems are installed inside, it is desirable to disassemble them and remove them from the premises.

How to disinfect the greenhouse in the fall

Before disinfection, the entire surface as well as the frame must be thoroughly cleaned. After washing you can disinfect. Chemical and biological preparations are used for processing.

Means for disinfection of the polycarbonate greenhouse in the fall

There are quite a few ways to disinfect a polycarbonate greenhouse in the fall. Here are some of the compositions that can be used for sanitization:

  • copper sulphate;
  • sulfur checker;
  • potassium permanganate;
  • bleaching powder;
  • cherenkovy sulfur.

If the structure is old, heavily neglected and has not been disinfected for a long time, then formalin is used for its treatment. It is a potent substance, but it will kill not only harmful, but also beneficial microorganisms.

Sulfur checker

An effective method of disinfecting a greenhouse in the autumn, simple and reliable, but absolutely not applicable to structures with a metal frame. In the process of fumigation, the checker emits sulfur dioxide, which, when interacting with water, turns into acid. Contact of such drops on metal elements leads to very strong corrosion, which can no longer be stopped.

To disinfect a greenhouse made of polycarbonate in the fall, it is sealed with scotch tape, and sulfur bombs, the number of which is calculated from the formula, 100 g of the active substance per 1 m3 of volume are set evenly on the iron supports and set on fire. Making sure that the reaction began and the bomb began to emit smoke, the doors were closed. In this state, the room should be 3 days, after that it is aired.

Important! It is desirable to moisten the walls and frame before the start of fumigation with water for greater efficiency.

Cherenkovaya sulfur

To fumigate with sulfur, you will need to mix it in equal proportions with charcoal and grind it. The mixture is poured onto metal trays and evenly spaced. In total it is required to take 1 kg of sulfur for each 10 m3 of greenhouse volume.

The principle of operation is similar to sulfuric saber; therefore, this method is also contraindicated for greenhouses on a metal frame. The ignited sulfur is left in a hermetically sealed greenhouse for 3-5 days, during which time not only the surface of the greenhouse will be disinfected, but also the soil in it. After that, the doors open. It is necessary to air the structure for several weeks, all work in it at this time must be stopped.

Important! All work with sulfur compounds must be carried out using personal protective equipment.

Copper sulfate

Copper sulfate is an effective broad-spectrum fungicide. To prepare the treatment solution, you must take 100 g of powder per 10 liters of water. Disinfection of the greenhouse in the autumn of copper sulfate is performed using a spray gun, sprayer or spray of any type.

Bleaching powder

To treat the surface of the greenhouse with a bleach solution, it will be necessary to dissolve 0.4 kg of the substance in 10 liters of water. After that, the mixture should be left for several hours to settle. Then gently drain the solution from the sediment and use it to process the interior. Sediment can be used for whitewashing wooden structures. After processing, the greenhouse should be closed for several days.

Potassium permanganate

Potassium permanganate is a well-known potassium permanganate. This drug is sold in pharmacies and is quite a strong disinfectant. For disinfection of greenhouses after harvesting, in the autumn, potassium permanganate is diluted to a bright pink color, after which the walls and the frame are treated with a brush or spray gun. Besides disinfection, potassium permanganate also enriches the soil with microelements.

Greenhouse frame repair and treatment

During operation, the frame suffers almost more than covering material. The metal profile collapses and rusts, wood under the influence of high temperature and humidity rots and turns into dust. In the autumn should pay special attention to this. Metal profile must be cleaned of rust and paint. Wooden items that have become unusable must be replaced.

Places of contact of the frame elements with polycarbonate sheets are the most polluted, since many different harmful microflora are stuffed into such cracks. Therefore, it is necessary to handle such places very carefully, not sparing the disinfectant solution.

How to wash a polycarbonate greenhouse in the fall

It is possible to clean the polycarbonate greenhouse in the autumn with warm water and laundry soap. You can also use liquid detergents, for example, for washing dishes, such as Glitter, Fae, and others.

How to wash a polycarbonate greenhouse in autumn

The detergent dissolved in water is applied to the walls and frame elements in the form of foam with a large brush or foam sponge, and after 10 minutes it is washed off with clean water from a hose. Special attention should be paid to the processing of the joints, the places of contact of the polycarbonate with the frame, the gaps and corners, since in these places there is the greatest accumulation of dirt.

Important! It is undesirable to use high pressure car washes for cleaning greenhouses, as they can damage polycarbonate.

Processing auxiliary elements

Everything that is in the greenhouse during the season (containers, dishes, implements, nets, trellis, etc.) is contaminated with pathogenic microflora no less than the soil or walls of the greenhouse. Therefore, after all the work in the greenhouse has been completed, these auxiliary elements need to be put in order, washed and sanitized.

Plastic containers and nets must be cleaned, washed, sanitized with a solution of any fungicide (for example, blue vitriol) and dried. All the ropes that were stretched in the greenhouse, as well as the wooden pegs to which the plants were tied, must be burned. It is, in fact, expendable material and there is no point in disinfecting it. But they do not need to be reused, since there are no less harmful bacteria on them than on the soil.


It is recommended to wash the polycarbonate greenhouse in the fall, as well as to sanitize it, even in cases when there were no diseases in the grown plants during the season. This is a very effective preventive measure that allows you not only to get aesthetic pleasure from the look of brilliant polycarbonate, but also to prevent the appearance of dangerous diseases that can significantly reduce or even destroy the entire crop. A clean greenhouse is a pledge of gardener's tranquility.