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Downy Mildew in Grape

How to identify and treat downy mildew in Grape.

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Grape care requirements

water
Regularly when establishing. Drought tolerant once established.
soil
Well-draining, poor to moderately fertile soil.
light
Full sun — south or west-facing wall ideal.
symptoms

Symptoms to look for in Grape

  • fiber_manual_recordYellow patches on upper leaf surface
  • fiber_manual_recordGrey-purple fuzzy growth on undersides
  • fiber_manual_recordWilting
help

Common causes in Grape

Caused by Peronospora and Pseudoperonospora species. Spreads in cool, humid conditions.

healing

How to treat downy mildew in Grape

Remove affected material. Apply copper fungicide or phosphonate.

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Preventing downy mildew in Grape

Avoid overcrowding. Water in morning. Choose resistant varieties.