Why does your White Cabbage Green Lunar F1 have white powder? Diagnose the cause and fix it with our step-by-step guide.
This is the most common cause of white, powdery-looking growths on brassicas like White Cabbage. It typically presents as white, blister-like pustules on the underside of leaves that can eventually appear as a white coating on the surface.
Infestations of whitefly larvae or adults can create a white appearance on the foliage. These insects congregate on the undersides of cabbage leaves and leave behind honeydew, which can lead to secondary fungal growth.
Mealybugs produce a white, cottony, or waxy secretion to protect themselves. While less common in open-field cabbage than powdery mildew, they can appear in greenhouse settings.
While typically gray, in its early stages or under specific humidity conditions, the fungal mycelium can appear as a light-colored, fuzzy coating on the edges of cabbage leaves.
Your plant might also be experiencing one of these issues:
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