Cercospora Leaf Spot on Ligustrum (Privet): Diagnosis and Treatment

Brown spots with yellow halos on wax-leaf privet (Ligustrum japonicum) indicate Cercospora leaf spot, a fungal disease favored by prolonged leaf wetness. Morning-only sun (east-facing exposure) often isn't enough to dry foliage quickly.

Management

As the hedge matures, it often outgrows the problem. Meanwhile, protect healthy leaves with a fungicide like myclobutanil (Immunox). Improve air circulation and avoid overhead watering to reduce leaf moisture.