Chemical control of powdery mildew

Most powdery mildews can be treated with fungicides.

The fungicides sulphur, tebuconazole, tebuconazole with trifloxystrobin, and triticonazole can be used to control powdery mildew on ornamental plants.

For edible plants, tebuconazole with trifloxystrobi can be used in glasshouse to treat courgettes, cucumbers, and summer squash. Sulphur can be used on grapes, gooseberries, cucumbers, peas, and many root/tuber vegetables.