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Powdery Mildew in Horse Chestnut

How to identify and treat powdery mildew in Horse Chestnut.

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Horse Chestnut care requirements

water
Moderate watering; water deeply during dry spells; tolerates occasional flooding
soil
Deep, fertile, well-drained loam; tolerates clay and alkaline soils
light
Full sun to partial shade; prefers 6+ hours of sunlight
symptoms

Symptoms to look for in Horse Chestnut

  • fiber_manual_recordWhite powdery patches on leaves
  • fiber_manual_recordDistorted new growth
  • fiber_manual_recordPremature leaf drop
help

Common causes in Horse Chestnut

Caused by various fungal species. Spreads in warm, dry conditions with high humidity nights.

healing

How to treat powdery mildew in Horse Chestnut

Remove affected leaves. Apply neem oil, potassium bicarbonate, or sulphur-based fungicide. Improve air circulation.

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Preventing powdery mildew in Horse Chestnut

Space plants for good airflow. Avoid overhead watering. Choose resistant varieties.

Powdery Mildew in Horse Chestnut — Symptoms & Treatment | GreenScout