My small red rhododendron, although having flowers, the leaves have turned yellows w with black spots. Photo below, can you advise
Janet Dawes added on April 30, 2018 | Answered
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Answered on April 30, 2018
Here is an article that runs down the various diseases that affect rhododendron: https://www.rhs.org.uk/advice/profile?PID=573
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