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Japanese Red Maple Main Trunk Dead, Basal Shoots Alive: Graft Failure?

Most Likely Cause

The main trunk died but basal shoots thrive. This classic pattern indicates a failed graft union—the desirable cultivar (scion) died, leaving the rootstock to sprout.

Options

If under warranty, request a replacement.
If not, you can train one strong basal shoot as a new leader, but it will be the rootstock species (likely green-leafed, not red).
Or remove and replant with a non-grafted or own-root specimen.

Graft failure is a nursery production issue, not a care mistake.

Shrubs: Japanese Maple Spring Leaf Damage: Herbicide Injury vs. Winter Kill; Bonfire Japanese Maple Sudden Branch Death: Drought or Decay?; Japanese Maple Leaf Wither: Overwatering in Clay Soil Corrected by Deep Weekly Watering; Valuing a Damaged Dwarf Japanese Maple: Need Certified Arborist Appraisal; Japanese Maple Bark Peeling: Often Normal Exfoliation; Japanese Red Maple and Japanese Beetles: Manageable Risk; Red Maple Borer Holes: Insecticide Treatment and Monitoring; Caring for a Potted Japanese Maple Indoors: Moisture, Pot Size, and Winter Protection; Japanese Maple 'Emperor': Improved Cold Hardiness and Scarlet Fall Color; Japanese Maple Leaf Color: Sun and Genetics Drive Red Pigment

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