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Downy Mildew in Geranium Pratense
How to identify and treat downy mildew in Geranium Pratense.
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Geranium Pratense care requirements
water
Moderate; water regularly during growing season, reduce in winter. Tolerates drought once established
soil
Well-draining, fertile soil; tolerates a range of soil types including clay loam
light
Full sun to partial shade; prefers at least 4–6 hours of direct sunlight daily
symptoms
Symptoms to look for in Geranium Pratense
- fiber_manual_recordYellow patches on upper leaf surface
- fiber_manual_recordGrey-purple fuzzy growth on undersides
- fiber_manual_recordWilting
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Common causes in Geranium Pratense
Caused by Peronospora and Pseudoperonospora species. Spreads in cool, humid conditions.
healing
How to treat downy mildew in Geranium Pratense
Remove affected material. Apply copper fungicide or phosphonate.
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Preventing downy mildew in Geranium Pratense
Avoid overcrowding. Water in morning. Choose resistant varieties.