Ah, grafting compatibility is about whether the scion and rootstock "accept" each other, where aligning their cambium layers lets them heal into one plant—a strong union means proper sap flow. But honestly, my textbooks make it sound like a perfect science, while back home we graft by eye and feel, and our old *ashughu* mango tree, a rough union of two wild varieties, still gives the sweetest fruit. Sometimes the theory of perfect alignment feels less important than the plant's own stubborn will to grow.
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