Why does your Chinese Cabbage Questar F1 have brown leaf tips? Diagnose the cause and fix it with our step-by-step guide.
This is a physiological disorder common in Brassicas like Chinese Cabbage, caused by uneven calcium distribution. Even if calcium is present in the soil, rapid growth or low transpiration rates prevent it from reaching the leaf margins.
Excessive use of nitrogen-based fertilizers or high salt content in irrigation water can cause ions to accumulate at leaf tips. In Chinese Cabbage, this leads to dehydration of the leaf margins and necrotic brown edges.
Inconsistent watering cycles, specifically periods of drought followed by saturation, disrupt the plant's ability to transport nutrients. This stress often manifests as scorched or brown leaf margins in heavy-feeding varieties like Questar F1.
Certain fungal pathogens target the leaf edges of Chinese Cabbage, especially in high humidity environments. The browning often starts at the tips and can progress into larger necrotic lesions.
Your plant might also be experiencing one of these issues:
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