Powdery mildew or downy mildew
If there is a whitish coating on the leaves, it is usually powdery mildew.
- Velvety covering
- White or grayish
- Upper side of leaf: powdery mildew
- Underside of leaf: downy mildew
Causes of powdery mildew
The fungal spores are already in the ground and spread when the plant is too moist.
Prevention of powdery mildew
Make sure that the soil is well drained and that waterlogging cannot build up.
Do not water the plants too often, only when the soil surface has dried, and do not wet the leaves.
Prick the parsley at the ideal planting distance of ten centimeters so that the leaves can dry off well after rain or watering.
Tips & Tricks
Some gardeners swear by planting chives between the parsley. This measure is intended to effectively reduce the occurrence of powdery mildew.
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