Poinsettias grown for Christmas sales are vulnerable to various destructive diseases that may develop anytime during production, from propagation to sales. This fact sheet discusses some of the fungal and bacterial diseases that can infect greenhouse-grown poinsettias, including symptoms, cause, disease development, and disease management options.
Poinsettia Diseases (PPFS-GH-06) is available online.
For additional publications on ornamental diseases, visit the UK Plant Pathology Extension Publications webpage.
Cheryl Kaiser, Extension Plant Pathology Support and Nicole W Gauthier, Extension Plant Pathologist