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Brown Spots in Swiss Chard
verifiedReviewed by the GreenScout Team
Swiss chard is a hardy, colorful leafy green with thick stems and tender leaves that range from green to red, yellow, or orange
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Swiss Chard care requirements
These care conditions are most relevant to brown spots in Swiss Chard. Check each one as a potential cause.
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Light
Full sun preferred; 6–8 hours of direct sunlight daily. Tolerates partial shade but produces fewer, slower-growing leaves. Some afternoon shade in hot climates reduces bolting.
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Water
Keep soil consistently moist, providing 1–1.5 inches of water per week. Water deeply at the base to encourage strong root development. Reduce frequency slightly in cool seasons but never allow soil to dry completely.
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Humidity
Moderate to high humidity (50–70%) preferred. Good air circulation prevents fungal diseases. Water early in the day to allow foliage to dry.
symptoms
Symptoms to look for in Swiss Chard
- fiber_manual_recordBrown patches on leaves
- fiber_manual_recordCrispy brown areas
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Common causes in Swiss Chard
- 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 Swiss Chard
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 Swiss Chard
Remove affected leaves. Treat with appropriate fungicide or bactericide. Adjust light exposure.
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Preventing brown spots in Swiss Chard
Avoid direct midday sun. Improve air circulation. Water at soil level.