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Powdery Mildew in Thermopsis

How to identify and treat powdery mildew in Thermopsis.

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Thermopsis care requirements

water
Low to moderate; water regularly during establishment, then reduce; drought-tolerant once mature
soil
Well-draining, sandy or gravelly loam; poor fertility tolerable due to nitrogen-fixing ability; avoid heavy clay
light
Full sun; requires 6+ hours of direct sunlight daily for optimal growth and flowering
symptoms

Symptoms to look for in Thermopsis

  • fiber_manual_recordWhite powdery patches on leaves
  • fiber_manual_recordDistorted new growth
  • fiber_manual_recordPremature leaf drop
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Common causes in Thermopsis

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

healing

How to treat powdery mildew in Thermopsis

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

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Preventing powdery mildew in Thermopsis

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