POWDERY MILDEWS

Powdery mildews are a group of related fungi which attack a wide range of plants, causing a white, dusty coating on leaves, stems and flowers, from spring onwards.

 

The following can be vulnerable: Symptoms:
White, powdery spreading patches of fungus on upper or lower leaf surfaces, flowers and fruit.

Destroying fallen infected leaves in autumn will reduce the amount of infectious spores next spring. Mulching and watering reduces water stress and helps make plants less prone to infection. Promptly pruning out infected shoots will reduce subsequent infection.

Powdery mildews either spend the winter as dormant infections on green tissues, or as resting structures on fallen leaves which then release spores the following spring.

The treatment agents listed below contain a blend of surfactants and nutrients and can be used to eradicate the condition: