Fungal Leaf Spot on a Ligustrum - Caused by the fungus Cercospora sp. This is a common disease of Ligustrum species. There are two Cercospora species that cause this leaf spot disease. A related species Pseudocercospora causes similar spots.
These fungi survive in adverse conditions in leaves in the canopy and in fallen leaves. The spores they produce are wind born or carried in splashing water to infect new leaves.
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