Answer: It sounds as though you have planted your rhododendrons in a suitable location and are caring for them well. Unfortunately, these plants are occasionally subject to a number of different foliar problems including fungus as well as diseases. Based on your description it is impossible to make a diagnosis or suggest a cure. You might wish to take a sample to your County Extension (652-3370) for a definite identification of the problem and suggested remedies. In the meantime, be sure to clean up and remove and destroy any fallen leaves or twigs to try to limit reinfection.
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