Why does your Brassica juncea have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Mustard greens are heavy nitrogen feeders. A lack of available nitrogen prevents the production of chlorophyll, causing older leaves to turn pale yellow before progressing to the new growth.
Brassica juncea requires consistent moisture but cannot tolerate waterlogged soil. Excess water displaces oxygen in the soil, causing root suffocation and systemic yellowing of the foliage.
Mustard greens are cool-season crops. High temperatures can cause physiological stress, leading to chlorosis and eventual bolting as the plant attempts to complete its life cycle quickly.
In alkaline soils, Brassica species struggle to uptake micronutrients. Iron deficiency typically shows as interveinal chlorosis on new leaves, while magnesium deficiency affects older leaves.
Your plant might also be experiencing one of these issues:
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