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stjohnsroad

Black on the top side of leaves. What is it??

stjohnsroad
6 years ago
last modified: 6 years ago

A black coating (fungus, mould??) appeared on the top side of the leaves earlier in the year (approx Feb/March). I think there had been a lot of rain and hot days at the time. Does anyone know what this is and how to treat it? Plant appears to be surviving fine. Many thanks in advance.

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