Powdery mildew looks like somebody has sprinkled icing sugar over the leaves. Powdery mildew thrives in dry weather and can quickly kill many of your plants including courgettes, squashes, cucumbers, grapevines and many other plants. A simple way to combat this fungus is to spray with milk diluted in water. Keeping the roots watered and moist will also combat powdery mildew. | Simon Akeroyd Garden Writer

EZ How to Make a Powdery Mildew Spray - Baking Soda Fungicide