Why does your White Cabbage Autumn Queen F1 have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Cabbages are heavy feeders, and a lack of nitrogen prevents the formation of chlorophyll, leading to uniform yellowing of older leaves first. This is common in Autumn Queen varieties during rapid growth phases if soil nutrients are depleted.
Excessive moisture in the root zone displaces oxygen, causing anaerobic conditions that lead to chlorosis. In brassicas like Autumn Queen, waterlogged soil quickly leads to yellowing of the outer foliage.
While primary symptoms are small 'shotholes,' heavy feeding by flea beetles can stress the plant, causing physiological yellowing of the leaf tissue around the wound sites.
A lack of magnesium specifically interferes with chlorophyll synthesis, often manifesting as interveinal chlorosis (yellowing between green veins) on older leaves.
Your plant might also be experiencing one of these issues:
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