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Brown Spots in Marrow

verifiedReviewed by the GreenScout Team

Marrow is a summer squash variety producing large, elongated green fruits that are harvested young and tender for optimal flavor and texture

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Marrow care requirements

These care conditions are most relevant to brown spots in Marrow. Check each one as a potential cause.

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Light
Full sun (6–8 hours daily); essential for fruit production and preventing leggy growth.
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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.
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Humidity
Moderate humidity (50–70%); ensure good air circulation around plants to reduce mildew and rot.
symptoms

Symptoms to look for in Marrow

  • fiber_manual_recordBrown patches on leaves
  • fiber_manual_recordCrispy brown areas
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Common causes in Marrow

  • fiber_manual_recordFungal leaf spot
  • fiber_manual_recordSunburn
  • fiber_manual_recordBacterial blight
  • fiber_manual_recordCold damage
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How to diagnose brown spots in Marrow

Sunburn: bleached patches facing light source. Fungal: brown spots with rings. Bacterial: water-soaked spots turning brown.

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How to treat brown spots in Marrow

Remove affected leaves. Treat with appropriate fungicide or bactericide. Adjust light exposure.

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Preventing brown spots in Marrow

Avoid direct midday sun. Improve air circulation. Water at soil level.

Other Marrow problems

Brown Spots in Marrow — Causes & Treatment | GreenScout