Powdery mildew is a common fungal disease problem on many perennials, as well as annuals, shrubs, and even trees and turf. In 2000, the Plant Clinic saw powdery mildew most frequently on euonymus, hon

Flowering dogwood trees near Townsend Hall on the University of Delaware campus were observed with powdery mildew symptoms on May 13, which is very early. Now is the time to apply a fungicide to valua

ANR-1051 Revised November 2000. Austin Hagan, Extension Plant Pathologist, Professor, and Jacqueline Mullen, Extension Plant Pathologist and Diagnostician, both in Entomology and Plant Pathology at Au

Erysiphe pulchra (formerly Microsphaera puchra) and Phyllactinia guttata can produce powdery mildew infections on dogwood. The images presented here show very early symptoms. Useful information on

Dogwood powdery mildew is showing up in urban landscapes this spring. This disease is generally more common during drier weather, but cool nights have contributed to the development of this disease.