If a 1-inch ring of bark was removed completely around the trunk, the cambium is severed—tree will likely die. Try bridge-grafting (advanced) or wrap with grafting wax + tree tape to hold moisture, but odds are low.
If the cut is partial (not full circle), do nothing but spray the wound with Merit or household insecticide weekly for a month to repel borers. No wound dressings—they trap pathogens.
Check girdling extent carefully. Full circle = probable loss.
Controlling Caterpillars on Weeping Cherry Trees
Weeping Cherry Planting: Ground vs. Pot Myth
Storm-Damaged Weeping Willow: Regrowth Potential and Pruning
Weeping Cherry Leaf Curl in Clay Soil: Transplant Shock, Not Water Issue
Half a Weeping Cherry Tree Not Leafing Out: Causes and Steps
Borer Infestation in Mature Weeping Cherry: Identification and Treatment
Cherry Tree Sap, Bark Cracks, and Amber Glob: Borer Infestation
Replanting Weeping Cherry After Borers: Soil Treatment and Care
Weeping Cherry Not Flowering: Borer Damage and Fertilizer Fix
Weeping Cherry Oozing Black Tar: Slime Flux or Borers?
Neem Oil Burn on Weeping Cherry: Cause and Recovery
Transplant Shock in Weeping Cherry: Water Management for Recovery
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