Q.Diseased rhododendron
My daughter has sent me this photo of her young rhododendron as she is very concerned about the red markings on the leaves. I have no idea what it is, can you help?
Downtoearthdigs
Answered on July 28, 2016
We did not receive an image.
This sounds like a Leaf Spot fungus.
These articles have more information.
https://www.gardeningknowhow.com/ornamental/shrubs/rhododendron/issues-with-rhododendrons.htm
http://www.clemson.edu/extension/hgic/pests/plant_pests/shrubs/hgic2050.html
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