Why does your Red Salad Onion have drooping leaves? Diagnose the cause and fix it with our step-by-step guide.
Onions have shallow root systems and require consistent moisture to maintain cell turgor pressure. When soil dries out too much, the leaves lose structural integrity and wilt rapidly.
Excessive moisture in heavy soils deprives the roots of oxygen, leading to fungal pathogens like Pythium. This prevents the red onion roots from absorbing water, causing the leaves to droop even if the soil is wet.
This fungal-like pathogen attacks the leaf tissue, causing chlorosis and eventual collapse of the foliage. It thrives in high humidity and can cause a characteristic drooping appearance accompanied by purplish spots.
Extreme daytime temperatures cause the onion to lose moisture through transpiration faster than the roots can replace it. This results in temporary wilting during the hottest parts of the day.
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