Question
I HAVE BEEN TOLD THAT I HAVE TAR FUNGUS ON MY LARGE AZALEAS.  WHAT DO I NEED TO DO TO RID THEM OF THIS FUNGUS.  THE LEAVES OF THE PLANTS LOOK AWFUL.....VERY LITTLE GREEN.  THEY ARE BLOOMING AT THE PRESENT AND SEEM TO HAVE NORMAL BLOOMS BUT THE LEAVES ARE AWFUL.  I ALSO HAVE BEEN TOLD I HAVE WHITE FLIES ON MY GARDENIAS.  I LIVE IN NORTH EAST MISSISSIPPI.  THANK YOU FOR YOUR HELP.  LIBBY IN MISSISSIPPI

Answer
For tar spot
The fungus survives the winter in fallen leaves. Rake up and discard the leaves in fall. And use a fungicide on the leaves.
Spraying three times at two-week intervals with a copper fungicide (Hi-Yield Copper Fungicide, or Ferti-lome Black Spot & Powdery Mildew Control) or mancozeb (Bonide Mancozeb Flowable, Southern Ag Dithane M-45) starting when the leaves begin to unfurl in spring will provide control. Read and follow all directions on the label.

White Flies
Use an Insecticide such as  Ortho Bug-B-Gon Max Lawn & Garden Insect Killer, Bayer Advanced Rose & Flower Insect Killer, or  Spectracide Rose & Flower Insect Spray. Spray weekly making sure both sides of the leaves are sprayed. I would check with your local nursery/ garden type store for an insecticide for white flies.