If it is a Seifertia azaleae (or Pycnostysanus or Briosia azaleaea) infection, the dead bud will be covered with short hair-like structures. Seifertia azaleae is best controlled by sanitation, but may be reduced by spraying buds with fungicide. Avoid application of nitrogen after late spring, but phosphorus and potassium may be applied throughout the growing season.

I keep reading this as "Dang it..I have Bud Light." While that would certainly be unfortunate, overapplying phosphorus wouldn't be good either. Sample your soil and have it tested before fertilizing. In this area the commonly deficient nutrient on cultivated soils (gardens and landscaping) in nitrogen.

The above should end "is nitrogen."

Bboy. lol 'budlight' - Cracked me up.