Blueberry rust is starting to show up, it is likely to increase over the next month or so. This is relatively early. Growers need to be scouting for rust in susceptible varieties.
Susceptible Highbush Varieties:
Primadonna (under high pressure)
Emerald (under high pressure)
Fungicides for rust control are Pristine, Quash, Indar and Propiconazol