warning
Brown Spots in Leek
verifiedReviewed by the GreenScout Team
Leeks are cool-season alliums with a mild onion flavor, prized for their long white shaft and tender green tops
potted_plant
Leek care requirements
These care conditions are most relevant to brown spots in Leek. Check each one as a potential cause.
light_mode
Light
Full sun, 6–8 hours daily for optimal growth and sweetness
water_drop
Water
Provide 1–1.5 inches per week; consistent moisture prevents splitting and improves shaft development
humidity_percentage
Humidity
Moderate humidity (50–70%); ensure good air circulation to prevent fungal issues
symptoms
Symptoms to look for in Leek
- fiber_manual_recordBrown patches on leaves
- fiber_manual_recordCrispy brown areas
help
Common causes in Leek
- fiber_manual_recordFungal leaf spot
- fiber_manual_recordSunburn
- fiber_manual_recordBacterial blight
- fiber_manual_recordCold damage
troubleshoot
How to diagnose brown spots in Leek
Sunburn: bleached patches facing light source. Fungal: brown spots with rings. Bacterial: water-soaked spots turning brown.
healing
How to treat brown spots in Leek
Remove affected leaves. Treat with appropriate fungicide or bactericide. Adjust light exposure.
shield
Preventing brown spots in Leek
Avoid direct midday sun. Improve air circulation. Water at soil level.