Diagnosing Fire Blight on Loquat Tree in San Diego

IMG_1769 Year-old loquat on southwest slope, watered twice weekly via sprinkler. Leaves turning rusty brown from top down; rusty brown flower-like structures appearing.

Diagnosis

Likely fire blight—bacterial disease. Symptoms: twig/branch weakening, foliage wilting, infected areas turning brown/blackened appearance. Progressive: stunted growth, branch dieback.

Treatment

• Prune infected areas with sterile shears
• Apply copper sprays to prevent bloom infection

Take photo to local garden center tree expert for confirmation and local treatment options. Contact county extension office if no knowledgeable nursery nearby.

Reference

Buzzle: Loquat Tree Care