Q.China Girl Holly has black coating
China Girl Holly has black coating on inside branches and leaves. How do I get rid of these? After this awful winter I have noticed that the holly has a black coating covering wood and leaves but only inside the bush. The outer leaves and wood looks OK?

Downtoearthdigs
Answered on June 18, 2015
This sounds like sooty mold.
Neem Oil is a good treatment.
Here is a link with more information.
https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
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