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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. 
Have you noticed spots like these on your Ligustrum trees? We can fix this problem once and for all. Visit the Contact Us page and fill out the information, and our Arborist will contact you.
 


Comments

LINDA THERMOS
06/27/2010 10:58am

I HAVE MANY LIGUSTRUMS, MOST HAVE A THICK LAYER OF SOME KIND OF DRY FUNGUS ON THE TRUNKS & BRANCHES. DO YOU KNOW WHAT IT IS & HOW TO TREAT IT?????
THANKS!

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Matt Neal link
06/27/2010 12:33pm

Hello Linda,
There are many different types of fungus that make their homes on the branches and trunks of trees. Most of these fungi are harmlessly living in symbiosis with the tree. This is to say that they do not negatively effect the tree, but they receive the moisture and nutrients necessary to thrive from the water that runs down the bark. Without actually looking at your trees, it is not possible to make a proper determination of what type of fungus you are seeing. I would suggest calling an ISA Certified Arborist in your area to have them take a look at your trees. If your trees are beginning to decline, it is best to act fast in order to save them. Chances are very likely that the fungi that you are seeing are called Lichens, which are totally harmless.

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