Azalea's limbs are dying

nanapam02April 8, 2012

The plant looks good then one day one of the limbs starts to turn brown and then it dies. Can't find signs of any creatures. Some plants range in age from 10 to 20 yrs. old.

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morz8(Washington Coast Z8b)

There are three possibilities where you might find individual branches on azaleas dying -
Plants that are experiencing drought will sometimes react with entire stems or branches dying instead of the whole plant - almost like they are conserving what little moisture there is by making a sacrifice :)
Rhododendron/azalea borer (insect), and bark split which is weather related. Sudden low temperatures in Fall or in early Spring after a warm up can cause bark to crack and separate from the body of the stem and the branch beyond the stem will die.

    Bookmark   April 10, 2012 at 11:05AM
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pamelagrace(7b Raleigh NC)

Thanks for the info. No problem with drought and I checked the dead limbs for a borer. I would say the weather but they were doing it last year.

    Bookmark   April 10, 2012 at 9:18PM
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Dave in NoVA • 7a • Northern VA

There are two other possibilties that I know of.

1) overly wet soil can cause roots to die

2) Phytophthora root rot. Phytophthora is a soil-borne fungus-like organism that attacks roots.

    Bookmark   May 8, 2012 at 10:57AM
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