Why does your White Cabbage Ortus F1 have brown leaf tips? Diagnose the cause and fix it with our step-by-step guide.
Excessive nitrogen or mineral salts in the soil can accumulate at the leaf margins, causing osmotic stress that leads to tip necrosis in Brassica species. This is particularly common in hybrid varieties like Ortus F1 if high-solubility fertilizers are used frequently.
Cabbages require consistent moisture to maintain cell turgor; prolonged dry periods cause the most distal parts of the leaf—the tips—to desiccate first. Rapid cycling between bone-dry and saturated soil can also trigger this tissue death.
Calcium is immobile within the plant, and during periods of rapid growth in Ortus F1, a lack of calcium mobility to new leaves causes cell walls to collapse at the tips. This is often induced by uneven watering rather than just low soil calcium levels.
High daytime temperatures can increase transpiration rates beyond the root system's ability to supply water, leading to scorched leaf margins. This is a common physiological response in Brassicas during heat waves.
Your plant might also be experiencing one of these issues:
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