Why does your White Cabbage Sunta F1 have white powder? Diagnose the cause and fix it with our step-by-step guide.
This is the most common cause of white, blister-like pustules on Brassicaceae like 'Sunta' cabbage. The fungus manifests as white, powdery masses on the underside of leaves which eventually rupture to release spores.
A lack of essential micronutrients like manganese or nitrogen can cause leaf tissue to lose chlorophyll, appearing as pale or white patches. In 'Sunta' cabbage, this often presents as a loss of green pigment in new growth.
If there is a sticky residue (honeydew) on the cabbage leaves from aphids or whiteflies, a black/greyish-white fungal film may develop. While usually dark, it can appear as a dusty, pale coating in early stages.
Your plant might also be experiencing one of these issues:
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