Why does your White Cabbage O S Cross F1 have brown leaf tips? Diagnose the cause and fix it with our step-by-step guide.
High levels of soluble salts from fertilizers or hard water accumulate in the leaf margins, causing osmotic stress and cell death at the tips. This is particularly common in cabbage cultivars during periods of high evaporation.
Calcium is immobile within the plant; when transpiration is low due to high humidity, calcium cannot reach the growing edges of the leaves, leading to necrotic brown tips. This 'tip burn' often affects the inner, younger leaves of the cabbage head first.
Inconsistent soil moisture causes the plant to lose water faster than it can be replaced, leading to desiccation of the furthest extremities (the leaf tips). Cabbage requires consistent moisture to maintain the turgor pressure needed for large leaf development.
Certain fungal pathogens can enter through leaf margins, causing necrotic brown lesions that may start at the tips and expand inward. This is more likely if there has been high humidity and frequent wetting of the foliage.
Your plant might also be experiencing one of these issues:
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