Technical Abstract: Several fungicides will control web blight, but guidelines about when to spray have not been clearly understood. Previous research has shown that a maximum daily temperatures greater than 95°F and minimum daily temperatures less than 68°F slow web blight development, but weather conditions are not suitable for precise prediction of when rapid blight will develop. With three years of research at two locations (Poplarville, MS and Mobile, AL), applying fungicides on scheduled calendar dates (around July 10 and August 1) was the most reliable criterion for suppressing blight development on ‘Gumpo’ azalea. Scouting provides additional information to adjust fungicide timing due to yearly differences in weather and growing conditions that affect web blight development. Scouting should take about 10 minutes per block of plants of the same cultivar and age. Scouting is done by spreading branches so you can take a quick count of the number of dead leaves present in the inner canopy (not ones on the surface of the bark medium). By checking several blocks it will be obvious which blocks of plants have more advanced symptoms and when disease has advanced. This knowledge will allow fungicides to be applied a week or so earlier or later than the scheduled date, but should be used with caution because rapid blight can develop later in the same week plants were scouted.