Informational table showing disease name, symptoms, pathogen/cause, and management of English Ivy (Hedera) diseases. Disease Symptoms Pathogen/Cause Management Bacterial Leaf Spot Circular, dark brown to black spots with yellow halos develop on leaves. Leaves yellow, die, and fall. Xanthomonas campestris pv. hederae Purchase plants free of the disease. Discard infected plants. Water in a manner that keeps the surface of the leaves dry. Apply a fungicide to protect healthy plants. Fungal Leaf Spot Large, irregularly shaped tan to brown spots have numerous, tiny dark brown dots (fruiting structures) within them. Colletotrichum trichellum Same as for bacterial leaf.

Bacterial leaf spot.

Fungal leaf spot.

Prepared by Gary W. Moorman, Professor of Plant Pathology