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Downy Mildew in Marrow

How to identify and treat downy mildew in Marrow.

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Marrow care requirements

water
Water regularly at soil level, providing 1–1.5 inches per week; increase frequency during fruit development. Keep soil consistently moist but not waterlogged.
soil
Rich, well-draining soil with ample organic matter; pH 6.0–7.0. Incorporate aged compost before planting.
light
Full sun (6–8 hours daily); essential for fruit production and preventing leggy growth.
symptoms

Symptoms to look for in Marrow

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

Common causes in Marrow

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

healing

How to treat downy mildew in Marrow

Remove affected material. Apply copper fungicide or phosphonate.

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Preventing downy mildew in Marrow

Avoid overcrowding. Water in morning. Choose resistant varieties.