It is hot, dang hot. Everything is wilting and soft. And suddenly I am watering everyday just to keep things alive, such a shock after the cool spring with decent rainfall. Along with the heat the powdery mildew has arrived on the zucchini plants.
Two treatment methods:
Mix 1 part full cream milk with 9 parts of water. Spray the stems and leaves with the milky solution. Reapply after rain.
Spray the leaves with a solution of 1 teaspoon of baking soda (bicarb soda) with 4 cups of water. This will change the pH of the leaves and create an inhospitable environment.