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Leaf Spots on Young Black Walnut: Harmless Fungi or Galls

Pink/peach spots on leaves of 7-9 year old black walnuts in southern Alabama are likely leaf spot fungi (common on walnuts/pecans) or insect galls. Neither damages tree health; worst case is premature leaf drop.

Verification

Consult the Alabama Forestry Commission forester (free visit) for confirmation.
Reference: USDA "Insects and Diseases of Black Walnut" guide.
No treatment needed; tree will outgrow cosmetic spots.

The author retired from that agency and recommends their expertise.

Plant Diseases: Black Spots on Trees in Wet Area: Need Better Photo; Oleander Black Bark and Leaves: Sooty Mold from Aphids/Scale and Atomic Grow; Planting After Black Walnut Removal: Is the Soil Safe After 8 Years?; Black Rot on Grapes/Apples: No Threat to Walnut Trees; Walnut Caterpillar Outbreak on Black Walnut: Identification and Control; Black Walnut Management: Lumber Value vs. Nut Uses; Growing Grass Under Black Walnut Trees: Tolerant Species by Region; Black Walnut Tree Diseases: Recognition and Management; Selling Backyard Black Walnut: Low Value Due to Limbs, Metal, and Sawmill Risks; Black Walnut Allelopathy: Juglone-Sensitive and Tolerant Plants for Your Landscape

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