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How and what to produce mulching of tomatoes in the greenhouse


In today's world, great attention is paid to the cultivation of organic products and vegetables. Advanced and improved agro-industrial technologies are being introduced that allow to obtain a rich crop of tomatoes in polycarbonate greenhouses at minimal cost. One of such technologies is mulching - covering the surface of the fertile soil layer with materials of natural or artificial origin. Let's figure out whether to mulch the tomatoes in the greenhouse and how to do it.

The purpose of mulching tomatoes in greenhouses and open ground

The main objectives of mulching tomatoes grown in the greenhouse, and in the open field are:

  1. Protection of greenhouse soil from excessive compaction and the formation of an impermeable crust;
  2. Ensuring the natural moisture and temperature of the soil for a long time;
  3. Reducing the frequency of irrigation and the amount of fresh water used;
  4. Preventing the development and transfer of pathogens and pests from soil to plants;
  5. Protection against drying of the top layer of the greenhouse soil as a result of the action of intense solar radiation;
  6. Improving soil fertility and increasing the overall yield of tomatoes.
Mulch tomato bed with black film

Peculiarities of Tomato Mulching

In conditions of a closed greenhouse space and elevated temperature, the accelerated process of moisture evaporation occurs. High humidity slows the growth and development of tomatoes, creates favorable conditions for the emergence of various diseases. Therefore, the introduction of mulch is most important in the conditions of greenhouse cultivation of vegetables.

Necessary materials

The most common are the following materials:

  • organic (natural): sawdust, hay or straw, freshly cut grass, compost;
  • inorganic (artificial): paper and cardboard, film, roofing felt, roofing felt and other types of roll coating materials.


An opaque light-stabilized film can be used as a film material. Before laying on the bed, the film is straightened along the entire length and fixed. For planting seeds or seedlings, special holes are pre-made in the film.

Mowed grass

The mowed grass for a long time retains the natural soil moisture in the greenhouse, which makes it possible to reduce the number of waterings several times. To protect against insect pests, freshly cut grass is finely ground and left to dry in the sun for several days.

Freshly mowed grass tomatoes

Hay (straw)

Mulching with dried grass or straw helps prevent weed germination and provides reliable plant protection against pests. When growing low-growing varieties of tomatoes, hay plays the role of litter for fruits lying on it. Fruits always remain dry, clean, and therefore not susceptible to decay or infection by pathogenic bacteria.

Mulch garden of tomatoes with hay

Paper (cardboard)

Before you mumble a bed of newspapers, paper or cardboard, the soil around the tomatoes is loosened and additionally fertilized. Then the paper is crushed and put a layer on the bed, previously moistened with water or a solution of liquid fertilizer (compost).

When applied without crushing, a large number of holes are pre-made in the paper to allow air and moisture to pass unhindered.

The main disadvantage of paper is the absence of useful substances, therefore, a layer of fertile organic matter is added above the laid layer.

Mulching beds with paper


Mulching with sawdust is considered the most common method.

Layer thickness is assumed to be 10–15 cm. A thinner layer may cause rapid weed germination. Sawdust perfectly keeps the soil moisture, so the soil is always in a natural, moist condition. Sawdust makes it easier to weed and remove weeds. Sawdust perfectly absorb and allow excess water to pass through.

The main disadvantage of sawdust is that they take most of the beneficial trace elements (especially nitrogen) from plants and contribute to soil oxidation.

The laid layer of wood mulch is impregnated with a solution of urea to provide additional soil with nitrogen. To prevent oxidation of the soil, slaked lime or chalk is added to sawdust.
Sawdust on tomatoes in a greenhouse as mulch


Compost mulch is the most excellent type of protection and nutrition of tomatoes in the greenhouse.

The structure of the litter should be completely rotten, homogeneous, crumbly, odorless, without the inclusion of sawdust and any impurities. Horse manure is best suited as a compost for tomatoes.

As an additional soil fertilizer, fertilizer application in the form of a liquid compost solution has the best effect.

The layer thickness is assumed to be 20 cm. At the same time, seedlings and seedlings of greenhouse tomatoes are planted not into the soil, but directly into the compost, to a depth of 1-3 cm.

Lightly composted tomatoes

Unsuitable for mulch materials

It is not recommended to use bark and leaves of coniferous trees as mulch for tomatoes grown in the greenhouse.containing specific volatile substances and essential oils that can disrupt the vital activity of beneficial microorganisms. The most correct and effective will be the burning of these components, followed by the use of ash.

Mulching with a cloth

Also considered unsuitable tol (roofing felt) containing toxic substances. Not recommended for use pure peat, contributing to the oxidation of the soil.

Thus, the competent choice of the method and material for mulching leads to a significant reduction in the cost of growing tomatoes in the greenhouse. The numerous advantages of using this procedure allow you to get a rich and high-quality harvest of these beautiful and healthy vegetables.