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Powdery Mildew in Perovskia

How to identify and treat powdery mildew in Perovskia.

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Perovskia care requirements

water
Low; very drought-tolerant once established; water sparingly and avoid waterlogging
soil
Well-draining, preferably poor to moderate fertility; tolerates sandy, gravelly, or alkaline soils
light
Full sun (6+ hours daily); essential for dense foliage and abundant flowering
symptoms

Symptoms to look for in Perovskia

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

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

healing

How to treat powdery mildew in Perovskia

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

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Preventing powdery mildew in Perovskia

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