I have azaleas that have a mushroom looking like bloom at the end of the leaf that hangs downward. Is this a bloom or is it a disease?
kimiko. trottier@yahoo.com
I would guess that it is azalea leaf gall. You will find information in this article: http://extension.oregonstate.edu/gardening/azalea-leaf-gall-causes-crusty-leaves-your-azalea
Azaleas have a whitish powdery substance on roots. What steps to prevent others from getting it?
This sounds like Armillaria Root Rot, but without seeing it, one can't be sure. This article might help: http://www.clemson.edu/extension/hgic/pests/plant_pests/shrubs/hgic2057.html
For positive identification and recommendations, take a sample to your local agricultural extension office.
My azalea has mildew like stains on all the branches which are white in colour. What is it? How can I treat it?
Actually, I see that you listed this in houseplants. If your azalea is a houseplant, it might be powdery mildew. This will help with that, if you think this is the issue:
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm
This is lichen. It is not harmful to the plant at all. But if you would like to remove it, this article will help:
https://www.gardeningknowhow.com/ornamental/fungus-lichen/treatment-tree-lichen.htm
Two established azaleas in our garden have died. All of a sudden the established plants have died back from the leaves down the stem. What are we doing wrong? Can you help us, please?
It sounds like they may have Phytophthora Root Rot. It can spread rapidly among azaleas. I think you will find this article helpful: https://www.gardeningknowhow.com/ornamental/shrubs/azalea/phytophthora-root-rot-azaleas.htm
When should I cut off the dead stems from frost on my azalea bush? Right now some flowers are in bloom that weren't affected by the cold, but other stems are laying over dead.
I would wait until spring. While the damage looks unsightly, pruning now can cause the plant to try to grow, which just exposes it to further damage from cold weather.
I have several types of azaleas, the ones which bloom all year and the others Pride of Mobile, which bloom in spring. I noticed some of them have dark spots and some have just bloomed. What can I spray on them now to prevent disease and should I go ahead and put Osmocote or azalea food on them? I live in Alabama.
There are a few issues that could cause that. Look closely at the plant and see if you can see other signs. This article can give you a starting point: https://www.gardeningknowhow.com/ornamental/shrubs/azalea/common-azalea-problems.htm It sounds like it has a fungus, which can be treated with a fungicide (like neem oil) and that should help. If you can spot other indicators of a problem, we can give you more precise advice on how to treat it. A little fertilizer now shouldn't hurt either.
Can I prune back an azalea bush and use a good branch to regrow another bush?
Yes, you can do this. These articles will help with that: https://www.gardeningknowhow.com/ornamental/shrubs/azalea/pruning-azaleas.htm, https://www.gardeningknowhow.com/ornamental/trees/tgen/how-to-root-cuttings-from-various-shrubs-bushes-and-trees.htm