How do you bring a dead azalea plant back to life?
If it is truly dead, you cannot bring it back to life. But if the roots or branches are still alive, just care for it as you normally would and it will be fine. This article will help you:
https://www.gardeningknowhow.com/plant-problems/environmental/how-to-tell-if-a-plant-is-dead-and-how-to-recover-an-almost-dead-plant.htm
We have a great big azalea bush; it's about 50 years old. We have kept it there for sentimental reasons, but it's getting white fungus on it pretty bad. Now the problem: For the last three years or so, we have noticed a beautiful nandina bush that has grown right through the middle of it. We want to cut down the azalea and keep the nandina. Any suggestions on the best way to do this?
I would just take a pair of pruning shears and trim away the azalea, branch by branch, from around the nandina. Trim away until just the stumps are left. Paint the fresh cuts on the azalea stumps with Round-up to finish off the root system.
When is the best time of year to trim back our azalea bushes?
This article will help you with that:
https://www.gardeningknowhow.com/ornamental/shrubs/azalea/pruning-azaleas.htm
I have noticed bore holes in the trunk and stem of one of my azalea bushes. It looks like something has tunneled inside. I would like to know what might be doing it and what I can do about it. The bush currently has buds on it and I do not want to lose the bush by it dying.
It sounds like an azalea stem borer. This article will help you:
http://www.ces.ncsu.edu/depts/ent/notes/O&T/shrubs/ort076e/ort076e.htm
Gray matter covers most all of the branches. The bushes continue to grow and bloom; however, not at the rate prior to noticing the gray matter. What can be done to remove/eliminate this gray matter and restore health to the plant?
Unfortunately, it is most likely root rot. This article will explain more about it:
https://www.gardeningknowhow.com/ornamental/shrubs/azalea/phytophthora-root-rot-azaleas.htm
An azalea has leaves that look like the "black spot" my roses get - turning brown with black spots - like they have been burned. My son's teacher told me there was a disease that makes the leaves look burned. What is it and how can I protect the plant? I sprayed a fungicide with no results. There is new spring growth developing, but no blooms this year!
Sooty mold or sooty canker can give leaves a burned look, but they normally do not manifest as spots, but rather as large areas that look to have been burned.
Older azaleas are susceptible to a condition called leaf spot. It is caused by a fungus and happens after cold winters. Normally it clears up on its own, but you can treat the plants with a fungicide to help clear it up faster.
My azaleas have some kind of fungus on the stems. It covers all the branches and looks very unsightly. It has a greenish-grey color and can be rubbed off by hand. The plants are still alive and flowering but have very few leaves, so that in winter they actually look dead. Can you please advise?
It is most likely lichen. This article will explain more:
https://www.gardeningknowhow.com/ornamental/fungus-lichen/treatment-tree-lichen.htm