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Maple White Spots Under Limbs: Lichens

Old large maples in Traverse City, MI with white round spots under limbs, healthy otherwise: lichens. Harmless, non-parasitic, common in wooded lots. No action needed.

Plant Diseases: Mushrooms at Maple Tree Base: Harmless or Hazard?; White Spots on Maple Leaves: Cottony Cushion Scale; White Powdery Spots on Maple Leaf Undersides: Likely Insects; White Raised Spots on Ornamentals: Wax Scale Insects; White Spots on Red Maple: Superficial Fungus/Algae, Not Harmful; Red Sunset Maple Top Leaf Drop: Root System Lag; Green Growth on Maple Trunks: Lichens, Not Harmful; Maple Trunk White Spots: Harmless Lichens; Phalaenopsis Sunburn: White Bleached Spots Are Permanent; Construction-Damaged Maples: Remove or Prune?

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