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Powdery Mildew in Yarrow

How to identify and treat powdery mildew in Yarrow.

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Yarrow care requirements

water
Low water needs; water moderately when young, then water only during drought once established. Drought-tolerant.
soil
Well-draining, poor to moderately fertile soil; tolerates sandy, rocky, or clay soils; neutral to slightly alkaline pH (6.0–7.5).
light
Full sun (6–8 hours daily); requires bright light for best growth and flowering.
symptoms

Symptoms to look for in Yarrow

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

Common causes in Yarrow

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

healing

How to treat powdery mildew in Yarrow

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

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Preventing powdery mildew in Yarrow

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