My neighbor has a problem on a plant in her front garden and has asked if you could help identify the problem. As usual, many thanks for your help.
This is a fungal disease called anthracnose attacking this euonymus shrub. Anthracnose is caused by the fungus Colletotrichum gloeosporioides. Symptoms consist of small, brownish spots with light-colored centers on the leaves and twigs. Variegated varieties are more susceptible.
Avoid wetting the foliage when watering. Rake up and dispose of infected leaves. Pick off the most badly infected leaves from the shrub and spray with chlorothalonil, mancozeb or copper fungicide sprays.
This disease is not life threatening, and spraying fungicides is optional.
Consumer Horticulture Specialist
The LSU AgCenter and the LSU College of Agriculture