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Powdery mildew

If a whitish-gray, cotton-like, powdery, moldy coating appears on the blades of grass, it is a fungal disease of the lawn. In advanced cases, small black spots may form in the center of the coating.

The disease occurs most frequently in the spring and summer during warm, humid weather. Without treatment, the affected leaves will die off completely.


Typical Characteristics

  • A whitish-gray, mold-like coating on the stalks

  • cotton-like or mealy texture

  • In cases of severe infestation, black spots appear in the center of the coating

  • The affected leaves eventually wither and die


Factors That Promote Infestation

The following conditions contribute to the occurrence of this lawn disease:

  • Lack of light

  • Drought stress

  • high humidity

  • poor air circulation

  • Soil temperatures between 12 and 16 °C


Preventive Measures

To prevent or control an infestation, we recommend:

  • one A balanced and consistent supply of nutrients

  • Optimizing Irrigation: As Much as Possible in the early morning hours Water the lawn so that it dries quickly

  • Regular mowing with sharp blades

  • Reduce stress on the lawn (e.g., avoid mowing too low, avoid major maintenance during hot or humid weather)

  • Improve light and air conditions, for example, by thinning, aerating, or ventilating