Instructions

• 1). Identify dried flowers that are contaminated with powdery mildew and separate them. Powdery mildew is spread through fungal spores in stagnant environments. Removing infected plants may help limit the spread of the fungus to other plants.
  
  
• 2). Apply a fungicide spray, lightly, to infected plants. There are several fungicide treatments labeled for powdery mildew available at most home and garden stores. They commonly contain potassium bicarbonate or sulfur.
  
  
• 3). Keep the infected dried flowers separate and monitor carefully to ensure that the powdery mildew infection is removed.
  
  
• 4). Move your dried flowers to a location with good air circulation and periodic sunlight to prevent future outbreaks of powdery mildew.