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Kwanzan Cherry Limb Rot from Pruning Wounds

Two pruning errors caused rot: a stub left to rot, creating a water-entry hole, and a large flush cut that couldn't seal. Water entered both, rotting the limbs. Sealants fail. A rain shield might slow it, but the tree is declining.

About Gardening: Sudden Leaf Curl and Fruit Loss in Barbados Cherry: Water, Herbicide, or Fertilizer?; Flowering Cherry Decline: Scratch Test for Life and Pruning Strategy; New Yoshino Cherry Tree with Brown Leaf Edges: Water or Planting Issue; Diagnosing a Non-Flowering Cherry Tree: Is It Dead?; Flowering Cherry Transplanted Before Bloom: Likely Dead; Propagating a Sentimental Cherry Tree by Cuttings; Sarracenia rubra Root Rot in Undrained Pot: Emergency Treatment; Flowering Cherry 'Kwanzan on Serrula': Mahogany Bark, Double Deep Pink Blooms; Tree Trunk Rot from a Retained Limb Stub: Assessing Structural Risk; Diagnosing Sudden Decline in Flowering Cherry Trees

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