How to Fix Yellow Grass? Why is My Grass Turning Yellow?

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How to fix yellow grass

Why is my grass turning yellow? Care recommendations and prevention methods how to deal with dry spots and yellow lawns. Check out below useful information about grass turning yellow.

Table of Contents

  1. Yellow grass – general information
  2. Fertilizer application errors
  3. Pests and diseases on the grass
  4. Fungal diseases of the lawn
  5. Video how to fix yellow grass

Yellow grass – general information

Yellow spots on the lawn and dry grass fires are a common sight on the lawn. The reason for this state of affairs may be negligence in lawn care, fungal diseases and pests that feed on grass roots. Let’s answer the question: why does the grass turn yellow, where do yellow spots and dry grass appear on the lawn, and how can this be prevented?

Fertilizer application errors

Yellow spots on the lawn can be the result of incorrectly selected fertilizer or uneven spreading of fertilizers on the area.

Excess nitrogen fertilizers “burn” the grass, forcing it to dry. The solution, in this case, is to suspend the application of mineral complexes for several weeks and abundantly water the lawn. A large amount of water will help dissolve the fertilizer and spread it deeper into the soil.

Yellowing of the lawn may also be the result of insufficient fertilizer and lack of components such as nitrogen. Nitrogen-free grass turns yellow and loses its green color.

To restore lawn grass, it is necessary to apply mineral fertilizer to the lawn, mainly rich in nitrogen and iron. Round, yellow, dry grass can also occur in places where animals urinate on the lawn. This is more true for females, who often “do their job” on the lawn.

Like the above-described excess fertilizer, the dog’s urine in large quantities also “burns” the grass and makes it dry. These places should be abundantly watered, and make sure that the dog does not visit the lawn.

Pests and diseases

Yellow round spots with dry grass are a characteristic symptom of caterpillars in the soil. The larvae of beetles, which feed on the roots of plants and damage them, contribute to the death of the upper green part of the plant, and, consequently, further yellowing and drying.

The presence of caterpillars can be determined manually. To do this, just dig the soil with a handful of sod in the area with yellowing grass.

If the grass does not break out of the roots, and we notice that the roots are poorly developed or severely damaged, we can be sure that this is the result of soil larvae.

Often in the ground under the removed grass you can see a white larva bent with a horseshoe. However, to see them, you need to dig a little deeper, because they feed at a depth of 10-20 cm.

Yellow spots on the lawn can be controlled with biological drugs using Nemesis, which contains nematodes that feed on soil larvae. This drug is quite expensive, and its use is not particularly advantageous in small areas (it is not possible to buy a small package). However, it should be recognized that this biological method of control is very effective.

Much better suited drug is Pi-Dracol, which contains microorganisms that limit the appearance of both pests and harmful soil nematodes. It has a double effect, because, on the one hand, it eliminates pathogenic flora, and on the other – helps to restore the roots of grass damaged by these pests. The drug works quickly and efficiently, and at a relatively low cost has a high protective effect. In this case, everyone can afford to protect their lawn with the help of biological agents 100% naturally.

If the foci of grass damage are too large, you can use chemical pesticides such as Dursban 480 or Pyrenex 480.

Yellow grass sests and diseases

Fungal diseases of herbs

Yellowish spots on the lawn with a pink rash, which usually appear after spring thaw or summer with variable warm weather, may indicate the development of snow mold. To accurately determine the examination of the affected areas of the lawn for the presence in the lower part of the plants of white plaque of the mycelium of the pathogen.

To protect the lawn from snow mold, you need to get rid of dry grass left after mowing, as well as remove the felt layer created by the mycelium, which occurs at the base of plants. It is recommended to use scrapers or a soft rake to clean lawns.

Also, it is necessary to spray the grass with special drugs against snow mold, as untreated hearth can spread the pathogen to the entire area and lead to the death of all grass on the lawn. To protect the grass from snow mold use environmentally friendly drug Polyversum.

Occurring in hot and humid weather, round yellow spots, streaks or rings that turn brown over time may indicate septoria. Usually, a few days before the appearance of these spots, you can see a certain smell above the lawn.

To prevent this disease, prevent the appearance of a felt layer and regularly clean the lawn by aeration. In hot periods, water the lawn in the morning and keep the turf dry in the evening and reduce the dose or temporarily stop applying nitrogen. It is also useful to spray the above-mentioned Polyversum.

In the case of too low mowing, yellowing of lawns can form quite quickly. Small spots 1-2 cm in diameter, the color of sun straw, are usually rounded and gather into one large spot.

Conditions that contribute to this yellowing: hot and dry summers, a large number of leaf residues in peat, poor plant growth, too low a number of nitrogen fertilizers.

Emerging spots of orange-yellow color, where the grass can be easily torn from the ground, maybe the result of anthracnose. The appearance of this disease is associated with high concentrations of organic residues in the soil, deficiency of phosphorus and potassium, frequent surface irrigation of the lawn without proper deep soil moisture.

The lawn should be loosened by aeration, removing the felt layer. The lawn should be watered less frequently, but abundantly, so that water penetrates well into the soil, as well as use a multi-component fertilizer.

Yellow spots on the grass, which are accompanied by a slight fragility of the grass, along with a weakened root system, may indicate a change in acidity in the soil. The appearance of stains in such cases is caused by too low mowing of the grass, light sandy soil and excessive calcium content in the substrate.

In this case, it is necessary to measure the pH of the soil and, if the result is above 7.0, use acidifying substances. The lawn must be aerated.

As you can see, such symptoms, such as dry grass and yellow spots on the lawn, can have many different causes. Therefore, in order not to make a mistake and choose the right treatment, you need to know about many provoking factors.

And of course it is important to carry out preventive care of the lawn to improve the growing conditions for grass by applying fertilizers, timely cleaning, spraying with natural preparations that are environmentally friendly for grass.

Video how to fix yellow grass

Date: 07.05.2021

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