How effective is neem oil for controlling powdery mildew on plants?

Neem oil is effective in controlling powdery mildew on plants due to its antifungal properties. It works by disrupting the growth and reproduction of the fungus that causes powdery mildew. However, its effectiveness can vary depending on the plant species and the severity of the infestation. It is generally considered a safe and natural option for controlling powdery mildew.