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Maple Spindle Galls: Cosmetic, But Tree Stress Is Real

Tiny Spikes on Maple Leaves Are Spindle Galls

These are mite- or wasp-induced galls—cosmetic only. The sparse canopy suggests another stressor (root, water, soil). Contact county extension for on-site evaluation.

Plant Diseases: Japanese Maple Honeydew and Sooty Mold: Aphid or Scale Infestation; Japanese Maple Transplant Shock and Leaf Scorch; Black Spots on Maple Leaves: Tar Spot Fungus—Rake Leaves, Reduce Inoculum, Tree Usually Fine; Mature Maple Tar Spot: Management and Fertilization; Maple Cottony Scale Infestation: Large Tree Management Strategy; Maple Leaf Galls: Harmless Insect Structures, No Human Risk; Maple Tree Failing to Leaf Out: Assessing Winter Injury; Maple Leaf Scorch from Excess Rain: No Spray Needed This Late; Black Spot Fungus on Mature Maple: Why Fall Cleanup Beats Spring Spraying; Late-Season Leaf Spots on Mature Maple: Cosmetic, Not Critical

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