top of page

powdery mildew

Tomato plants are very popular among gardeners around the world, but they are also susceptible to various diseases. One of the most common and annoying is powdery mildew, which is caused by fungi of the genus Oidium. This disease can severely affect the growth and yield of plants if not detected and treated in time.

Tomatenwissen

Causes of Powdery Mildew in Tomato Plants

Powdery mildew is a common fungal disease that can affect tomato plants. Here are the most common causes:

  • High humidity
    The fungus thrives particularly well in high humidity, which promotes the spread of spores.

  • Warm weather
    Warm temperatures, especially with high humidity, create ideal conditions for the fungus.

  • Poor air circulation
    The fungus can spread quickly in closely spaced plants or poorly ventilated greenhouses.

  • Infected plant remains
    Fungal spores can overwinter on infected plant remains and become active again the following year.

  • overhead irrigation
    If the leaves get wet during watering, this promotes the spread of mildew.

Measures to Control Powdery Mildew in Tomatoes

To combat powdery mildew, the following measures can be taken:

  • reduce humidity
    Improve air circulation around plants to reduce humidity. This can be achieved by thinning plants or opening greenhouse windows.

  • adjust water supply
    Water the plants directly at the ground, making sure the leaves stay dry. Watering in the morning is ideal, as this allows the leaves to dry out during the day.

  • Apply milk-water spray
    A mixture of one part milk and nine parts water can be sprayed on the affected plants. The lactic acid bacteria help to fight the fungus.

  • Pay attention to floor hygiene
    Infected plant remains should be removed and disposed of to prevent transmission to the next growing season.

  • monitor temperatures
    In greenhouses, maintain adequate temperature control to minimize conditions for fungal growth.

  • Regular check-ups
    Check plants regularly for signs of mildew so that early action can be taken.

These measures help reduce or prevent powdery mildew on tomato plants and keep the plants healthy.

Tomato logo! Experience diversity

The images on this homepage are from my private photo gallery and are my personal property. 
The texts on the entire homepage as well as the downloads are also under my copyright protection.

Please note that the seeds are offered free of charge. The prices listed only cover the costs for the 
Material used and the amount of work (seed removal, drying, labeling, packaging, etc.).

It is important to emphasize that the seeds offered are intended exclusively for the production of ornamental plants.
may be used as required by the applicable EU regulation.

  • Instagram
  • Facebook
  • Youtube

©2023 by Tomatoes! Experience diversity

bottom of page