One of five same-species maples leafing out later with darker, rougher bark is normal genetic variation. Different varieties or seedling genetics cause timing differences.
No concern if tree eventually leafs out normally. Monitor for other stress signs, but late leaf-out alone is not a problem.
Aphid Honeydew Causing Maple Sap Nuisance
Coral Bark Maple Losing Bark: Sunscald, Borers, or Natural Exfoliation?
Maple Bark Peeling: Decay Fungi and Borer Prevention
Bacterial Wetwood (Slime Flux) in Maple Trees
Japanese Maple Freeze Damage: Spring and Fall Fertilizing
Yellow Fungus on Japanese Maple Branches: Likely Wood Rot, Not Surface Fungus
Choosing the Right Maple Tree for Your Yard: Root Systems and Fall Color
Japanese Maple Honeydew and Sooty Mold: Aphid or Scale Infestation
Japanese Maple Scale Infestation: Simple WD-40 and Oil Treatment
Maple Tree Top Dieback: Root Competition and Mulch Solution
Japanese Maple Hypoxylon Canker: Fatal Fungal Diagnosis and Sanitation
Silver Maple Trunk Cracks and Oozing: Phytophthora Canker Diagnosis
Maple Tree Bacterial Wetwood: Sap, Insects, and Aphid Control
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