Late-Season Leaf Spots on Mature Maple: Cosmetic, Not Critical

Diagnosis

30-yr-old maple, large dark brown spots (hard), dropping leaves. = Fungal leaf spots, late-season.

Minimal health effect. Spraying a tree this size is impractical and unnecessary.

Plant Diseases: Japanese Maple Honeydew and Sooty Mold: Aphid or Scale Infestation; Japanese Maple Transplant Shock and Leaf Scorch; Maple Cottony Scale Infestation: Large Tree Management Strategy; Maple Leaf Galls: Harmless Insect Structures, No Human Risk; Maple Leaf Scorch from Excess Rain: No Spray Needed This Late; Black Spot Fungus on Mature Maple: Why Fall Cleanup Beats Spring Spraying; Diagnosing Maple Leaf Scorch: Bacterial vs. Physiological; Japanese Maple Lost All Leaves After Planting: Shock or Deer?; Maple Leaf Spots in the Catskills: Harmless Cosmetic Issue; Maple Leaf Galls: Harmless, No Treatment Needed

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