• Many diseases of ornamentals are stess-related. There are specific diseases that fact sheets have been developed for, so please browse through the list of fact sheets under that link. Examples are: crown gall, sycamore anthracnose, powdery mildew of dogwood, crabapple scab, azalea leaf gall, and ash rust.  There are general fact sheets for Selecting Plant Disease specimens, Diagnosing Horticultural Plant Problems, and Discouraging Plant Diseases in the Home Garden.
  • Ornamentals Diagnostic Website
  • Ornamentals Hotline
    • Contact your county office to sign up for Ornamentals Hotline, a publication
      designed to fit the green industry’s needs in the height of the growing season

      Stress-related Botryosphaeria canker on dogwood

      Botryosphaeria canker on redbud