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Cylindrocladium Leaf Spot on Holly: Identification and Fungicide Program

Disease Profile

Random yellow leaves with brown/tan spots and purple-black borders on mature holly in West Virginia indicate Cylindrocladium leaf spot. Common on 'Burford', Japanese, American, and yaupon hollies. Single spots cause premature leaf drop; severe cases lead to shoot dieback.

Fungicide Schedule

Apply fungicide (e.g., Ortho Multi-Purpose Fungicide/Daconil 2787) at leaf-out, repeat every 10–14 days until shoot growth stops. Only treat previously damaged plants. Check local nursery for other labeled products.

Plant Diseases: East Palatka Holly Yellowing: Water Deeply, Less Often; Yellow Leaves on Nellie Stevens Holly: Soil Test First; Blue Princess Holly Leaf Spot: Fungal Rings and Natural Leaf Drop; American Holly Yellowing and Black Spots: Fungal Disease Management; Holly Yellow Leaves: Check for Scale Insects; Identifying and Treating Rose Rust; Diagnosing Yellow Spots on Rose Leaves: Virus vs. Fungus; Rehabilitating a Stressed Nepenthes: Repotting, Light, and Patience; Ivy with Black Spots and Yellow Leaves: Likely Scale Insects; Yellow Spots on Impatiens Leaves? Check for Root-Bound Plants in Small Pots

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