powdery mildew fungicide Cleaning powder
Oct 25, 2020·What Is Powdery Mildew? Powdery mildew is the name given to the disease caused by hundreds of species of fungi in the order Erysiphales. This name comes from the white to grayish talcum-like powder that you will notice on the leaves of infected plants. This powder is a combination of spores and mycelia (fungal threads).