Raleigh News & Observer: How to remedy pesky powdery plant mildew and get that red clay ready for growing How to remedy pesky powdery plant mildew and get that red clay ready for growing The Mirror: Stop powdery mildew and fungal infections in gardens by using 1 kitchen item Stop powdery mildew and fungal infections in gardens by using 1 kitchen item Brazilian verbena (Verbena bonariensis) is a low-care, drought-tolerant plant, but can be susceptible to powdery mildew, a common fungal problem here in the warm, humid southeast. News & Observer ... Newsday: Pear tree rust spreading on Long Island, natural remedies for powdery mildew Pear tree rust spreading on Long Island, natural remedies for powdery mildew