Powdery Mildew On Parsley – Detect And Prevent

Last updated on October 23rd, 2023 at 08:59 pm

One of the most common diseases of parsley is powdery mildew – especially if the plants are grown outdoors. The fungal spores are already present in the soil and are promoted by too much wetness.

Petersilie Mehltau

Powdery or downy mildew

When a whitish coating appears on the leaves, it is usually powdery mildew.

  • Velvety coating
  • White or grayish
  • Top of leaf: powdery mildew
  • Lower leaf surface: downy mildew
  • Causes of powdery mildew

Powdery Mildew On Parsley - Detect And Prevent

The fungal spores are already in the soil and spread when the plant is too moist.

Prevention against powdery mildew

Provide well-drained soil where waterlogging cannot form.

Do not water the plants too frequently, but only when the soil surface has dried, and do not wet the leaves.

Prick out the parsley to the ideal planting distance of ten centimeters, so that the leaves can dry well after rain or watering.

Tips & Tricks
Some gardeners swear by planting chives between parsley. This measure is said to effectively curb the appearance of powdery mildew.


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