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Brown Spots in Spring Onion
verifiedReviewed by the GreenScout Team
Spring onions (also called bunching onions) are perennial alliums harvested as immature plants with tender white bases and green tops, used fresh or in cooking
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Spring Onion care requirements
These care conditions are most relevant to brown spots in Spring Onion. Check each one as a potential cause.
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Light
Full sun to part shade, 4–6 hours daily; tolerates light shade, especially in hot climates
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Water
Keep soil consistently moist with 0.5–1 inch per week; avoid waterlogging; reduce water if plants are left to perennialize
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Humidity
Moderate humidity (50–70%); good air circulation prevents fungal diseases
symptoms
Symptoms to look for in Spring Onion
- fiber_manual_recordBrown patches on leaves
- fiber_manual_recordCrispy brown areas
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Common causes in Spring Onion
- 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 Spring Onion
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 Spring Onion
Remove affected leaves. Treat with appropriate fungicide or bactericide. Adjust light exposure.
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Preventing brown spots in Spring Onion
Avoid direct midday sun. Improve air circulation. Water at soil level.