White, powdery fungal growth on the upper leaf surface, sometimes over the entire plant. The affected leaves can become distorted and collapse. Currently no chemical control for Powdery Mildew on strawberries. A common problem of glasshouse grown plants where levels of air humidity and ventilation can be an issue. Avoid overhead watering. Watering at the roots only.
Cultural controls: Improve air circulation/ventiliation where possible, avoid overhead watering. Remove badly affected plants to reduce spread of disease.
There is currently no registered chemical for the control of this problem on strawberries.