Powdery mildew is a common name for many species of fungi, and easily recognized by the appearance of a grayish powdery growth on leaves and grape berries. Powdery mildew thrives at high relative humidity, and temperatures between 68F to 86F. At temperatures over 90F some strains of powdery mildew cannot survive.

Powdery mildew can be managed by spraying fungicides. Rotation of different fungicides is recommended, as PM fungal strains have developed resistance to fungicides.

The Vinduino system provides a software tool for obtaining a local mildew index, and managing the best powdery mildew spraying frequency.
This is part of the standard package and can be activated by adding a private weather station.