Flowering Pear Tree Diseases: Identification and Treatment

Flowering pear (Pyrus calleryana) dazzles with spring white blooms and autumn red foliage but faces several serious diseases. Understanding symptoms enables early intervention to preserve these popular landscaping trees.

Major Diseases

Crown Gall (Bacterial)

Enlarged stems/branches with dead tissue accumulation near soil line. Treatment: Remove diseased tissue, apply bactericide.

Fire Blight (Bacterial)

Affects young leaves/stems during spring bloom. Sticky stem deposits indicate infection. Treatment: Streptomycin or bactericidal sprays in early stages.

Leaf Spot (Fungal)

Reddish-purple leaf patches in early fall, leading to reddened, dropping leaves. Treatment: Trim infected leaves, spray fungicide every two weeks.

Other Issues

Root rot, blister disease, late leaf rot, powdery mildew, sooty mold. Choose resistant cultivars. Apply appropriate fungicides for fungal infections.

Pest Concerns

Caterpillars, thrips, and webworms attack foliage. Inspect regularly, remove manually when possible. Consult local horticulturist for seasonal prevention schedules.

Prevention Strategy

Select disease-resistant varieties at purchase. Maintain tree vigor through proper watering, fertilization, and pruning. Early detection and targeted treatment preserve tree health and ornamental value.