English Ivy (Hedera) Diseases
|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
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Issued in furtherance of Cooperative Extension work, Acts of Congress, May 8 and June 30, 1914, in cooperation with the U. S. Department of Penn State College of Agricultural Sciences research and extension programs are funded in part by Pennsylvania counties, the Commonwealth of Pennsylvania, and the U.S. Department of Agriculture.
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