An e-Gro Alert from Jean Williams-Woodward covers why long-term weather fluctuations are causing early instances of powdery ...

Unfortunately, peonies are very susceptible to powdery mildew. With powdery mildew, you will notice white splotches on the leaves that spread to cover the leaf, as well as other leaves.

Common peonies (Paeonia ... to prune portions or entire plants during the growing season. These include bacterial blight, foliage becoming coated with a fungal powdery mildew, or root rot that ...

During the colder months, you might notice a white or greyish powder forming on ... Certain plants, such as hydrangeas, lilacs, phlox, and peonies, are particularly vulnerable to this fungus.