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1 Comment To "Spots On Rhododendron Leaves"
#1 Comment By BushDoctor On 08/03/2021 @ 1:01 pm
This is, likely, a bacterial pathogen. This will require treatment. Copper fungicides will be best. Here is an article that will help:
https://www.gardeningknowhow.com/garden-how-to/info/what-is-copper-fungicide.htm [1]