Larry Williams, UF/IFAS Extension Agent for Okaloosa County, offers lawn and garden advice specific to Northwest Florida.
689-5850 or 729-1400, Ext. 5850
Black spot, the most serious disease of roses in Florida, is promoted by wet weather. Rose enthusiasts in Florida need to be aware of this frequent fungal disease. This leaf spot disease is more common during wet, warm weather or when the foliage is being wet by overhead irrigation too frequently or too late in the day. High humidity, heavy dews and particularly frequent late afternoon and evening showers can promote black spot on many rose species.
Dr. Mathews Paret, UF/IFAS Extension