Diseases
Powdery mildew
Identify Powdery mildew: symptoms, possible causes, prevention, and practical actions for 54 affected plants. White, powdery coating on leaves
Powdery mildew is relevant across 54 plant profiles on Wild-Wuchs. In the data it is most often linked with Physalis pruinosa, Physalis peruviana, Apple, Aronia, Cynara scolymus. Typical signs include: White, powdery coating on leaves For gardeners, early diagnosis, suitable growing conditions, and gentle action matter most: Good air circulation (adequate plant spacing)
Plants
54
Category
Fruit, Fruit vegetables, Herbs, Leafy vegetables, Nuts
Risk
medium, low, high
Synonyms
Echter Mehltau, Echter mehltau, Echter mehltau asteraceae, Echter-mehltau, Erysiphales, Erysiphe heraclei, Erysiphe-cichoracearum, Podosphaera-xanthii
Scientific name
Podosphaera xanthii, Erysiphe spp.
Overview
Symptoms
- White, powdery coating on leaves
- Yellowing and distortion of leaves
- premature leaf drop
Damage
- Fungal disease appearing as a white, powdery coating on leaves, stems, and flowers. It weakens the plant and affects fruit development.
- Occurs in dry conditions with high humidity, rarely on thyme.
Prevention
- Good air circulation (adequate plant spacing)
- Ensure good air circulation
- Choose resistant varieties
Organic control
- Remove and dispose of infected plant parts
- Sprays with milk-water mixture (1:10) or baking soda solution (1 tbsp per 1 liter of water)
- Remove infected shoots
Season
- Spring to autumn, especially in dry weather with high humidity.
- peak infection June–September
Affected plants
Guides
Related guides
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Similar topics
FAQ
How do I recognize Powdery mildew?
White, powdery coating on leaves
What causes Powdery mildew?
Causes often relate to site conditions, weather, care, plant density, or pest pressure.
How can I prevent Powdery mildew?
Good air circulation (adequate plant spacing)
What helps against Powdery mildew?
Remove and dispose of infected plant parts
Which plants are affected?
Physalis pruinosa, Physalis peruviana, Apple, Aronia, Cynara scolymus, Eggplant, Tree spinach, Satureja, Rubus, butternut squash, cardoon, Chayote
When does Powdery mildew usually appear?
Spring to autumn, especially in dry weather with high humidity.