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White Mold on Plant Leaves
White Mold on Plant Leaves. Plants are susceptible to a type of fungus called powdery mildew that causes a white, dusty mold to develop on the leaves. This fungus spreads using spores that travel by the wind and attach themselves to other plants.
Plants are susceptible to a type of fungus called powdery mildew that causes a white, dusty mold to develop on the leaves. This fungus spreads using spores that travel by the wind and attach themselves to other plants.
Symptoms
The fungus first shows up as a coating of dusty white or gray over the surface of the leaves. If not treated, the fungus begins to distort the leaves, buds and fruits of the plant. Premature leaf drop is possible with powdery mildew.
Prevention
Any type of fungus requires moisture to grow, so minimize as much humidity around the plants as possible. It helps to reduce the frequency of watering if you suspect the fungus contaminated your plant. If you have indoor plants, increasing ventilation also helps to reduce humidity.
Management
Once you notice symptoms, remove any diseased leaves and dispose in plastic bags to keep the fungus from spreading, according to the North Dakota State University. If needed, fungicides exist to help eliminate the problem.
