WHEN TO USE Apply to affected plants at the first sign of symptoms, to prevent spread of disease to unaffected areas and new growth. Mildew is reduced by growing plants in sunny locations with good air circulation and by reducing water contact on leaf surfaces.
Some products are pre-mixed and ready to use.
Wettable sulfur must be mixed as directed before application. Always read label directions completely before using. Apply to leaf surface, top and bottom. Less toxic than most fungicides. Curcubits and roses may be damaged by sulfur, so test on a small area first.