What is Powdery Mildew? How do I treat it?
Powdery mildew is a fungus that attacks plants during warm, moist weather, particularly in areas with poor air flow. It is appears as a white or grayish film on leaves and parts of plants, and will appear to have a powdery texture (sometimes a little slimy). Plants with powdery mildew can be treated with either a contact or systemic fungicide. Contact Fungicides include: Bonide Fung-i-nil, Bonide Sulfur, and Bonide Liquid Copper. Systemic Fungicides include: Fertilome Systemic Fungicide, and Halt Systemic Fungicide.