Why does your White Cabbage Green Lunar F1 have brown leaf tips? Diagnose the cause and fix it with our step-by-step guide.
High concentrations of nitrogen or salts in the soil can cause osmotic stress, drawing moisture away from the leaf margins. This is common in brassicas like White Cabbage when heavily fertilized during rapid growth stages.
Cabbages have large leaf surface areas that transpire quickly; inconsistent moisture levels lead to the loss of turgor in the furthest extremities, causing desiccation of the tips.
Similar to blossom end rot in tomatoes, a lack of mobile calcium prevents cell wall formation at the growing edges. This is often triggered by rapid growth where calcium cannot move fast enough to the leaf margins.
Certain fungal pathogens thrive in high humidity and can manifest as necrotic brown lesions that often begin at the leaf edges or tips before spreading inward.
Your plant might also be experiencing one of these issues:
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