PROBLEM TO BE SOLVED: To provide a manufacturing method of a plant cutting seedling which improves efficiency of seedling production by use of a cutting.SOLUTION: A manufacturing method of a plant cutting seedling comprises: a rooting/culture process of performing rooting/culture by inserting a scion into a rooting medium and a seedling process of raising the scion after rooting at a seedling medium. Electric conductivity in the rooting medium is controlled to be more than 0.01 mS/cm and less than 0.5 mS/cm, and electric conductivity in the seedling medium is controlled to be more than 0.5 mS/cm.SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】本発明は、挿し木による苗生産の効率を高めた、植物の挿し木苗の生産方法の提供を目的とする。【解決手段】本発明は、挿し穂を発根培地に挿し付けて発根培養する発根培養工程、及び発根後の挿し穂を育苗培地にて育苗する育苗工程を含む植物の挿し木苗の生産方法において、発根培地中の電気伝導度を0.01mS/cmを超えて0.5mS/cm未満に制御し、育苗培地中の電気伝導度を0.5mS/cm以上に制御する方法を提供する。【選択図】なし