Apply to rooting beds at 2-week intervals. Develops during hot, wet weather. Dithane M-45 80W 1 T. 1.5 lb. Apply at 7-day intervals. Rust is found on deciduous hybrid azaleas and some native azaleas.
Alternate host is hemlock.
May be present in northern counties. Fore 80W 1 T. 1.5 lb.