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  • Answered by
    Nikki on
    October 26, 2011
    Certified Expert
    A.

    Unfortunately, it does sound like your azalea may have root rot. It is difficult to treat. Whether you treat them or remove them is up to you, but be aware that root rot can affect other plants in your yard. This article will help you: https://www.gardeningknowhow.com/ornamental/shrubs/azalea/phytophthora-root-rot-azaleas.htm

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  • Answered by
    Nikki on
    November 19, 2011
    Certified Expert
    A.

    The fungus you see on the azalea could be lichen. It is not harmful to the plant but if you want to be rid of it, this article will help:
    https://www.gardeningknowhow.com/ornamental/fungus-lichen/treatment-tree-lichen.htm

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  • Answered by
    Heather on
    February 19, 2012
    Certified Expert
    A.

    It sounds like it may be Cercospora Leaf Spot. It causes blue spots in some varieties of azalea (and red in others). The defoliation is unsightly, but will not kill the plant. To treat it, just spray the plant with a fungicide. You may want to repeat the treatment every few weeks until you are sure it is cleared up.

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  • Answered by
    Nikki on
    March 15, 2012
    Certified Expert
    A.

    It sounds like it may be powdery mildew. These articles will help:
    https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm
    https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm

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  • Answered by
    Heather on
    March 23, 2012
    Certified Expert
    A.

    I would check the roots. Leaf loss on older parts of the plant are signs of Phytophthora root rot, which is not curable and the plants would need to be removed. But, it could be just run of the mill fungus as well.

    Check the roots. If you see signs of root rot, the plants need to come out. If you do not see signs of root rot, treat with a fungicide and see if that does not clear things up a bit.

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  • Answered by
    Nikki on
    March 21, 2012
    Certified Expert
    A.

    Are you using fertilizer on your azalea plants? If so, they may be getting too much nitrogen and not enough phosphorus. Nitrogen makes healthy green plants, but too much blocks blooming. Use a fertilizer higher in phosphorus or even a phosphorus only amendment, like bone meal, to get them to bloom. This article will help you: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm

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  • Answered by
    zaffutos@hotmail.com on
    March 23, 2012
    A.

    Azalea's like a low PH soil. and they need a loose type soil. I put my leaves I get from my trees under the azalea bushes for years. They are so big now I need to do a BIG BIG cut back. ALSO THE MOST IMPORTANT thing to do is after and I mean within a week of the flowers dying; trim the bush back. If nothing else just a few inches from the end. The following year your plants should be loaded. Also they make a AZALEA specific fetilyzer that works great. don't over do it about 1/4 pound for plants up to 4 years old an then add 1/4 pound each year till you get to about a pound per plant once a year. Or follow the suggestions on the fertilyzer package. Good planting and pretty blooms

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