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Downy Mildew in Lettuce

How to identify and treat downy mildew in Lettuce.

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Lettuce care requirements

water
Regularly — keep soil consistently moist.
soil
Rich, moisture-retentive soil.
light
Full sun to partial shade.
symptoms

Symptoms to look for in Lettuce

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

Common causes in Lettuce

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

healing

How to treat downy mildew in Lettuce

Remove affected material. Apply copper fungicide or phosphonate.

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Preventing downy mildew in Lettuce

Avoid overcrowding. Water in morning. Choose resistant varieties.

Downy Mildew in Lettuce — Symptoms & Treatment | GreenScout