PROBLEM TO BE SOLVED: To provide a plant group planting machine enabling quick planting without making forest floor soil blocks crumble. SOLUTION: The plant group planting machine 1 is attached to the tip of an arm A of a heavy industrial machine, and is provided with a folk 3 supporting the bottom plate 12 of a container 10 where a forest floor soil block B is housed, a connection part 5 where the folk 3 is connected to the bottom plate 12 of the container 10 via wire 53, and a driving part 4 where the folk 3 is slid so as to slide the bottom plate 12 through the unit frame 11 of the container 10; wherein a planting machine body 2 is provided with a front surface plate 2c which comes in contact to a unit frame 11 moving together with the bottom plate 12 of the container 10 when the folk 3 slides, and functions as an abutting part regulating the movement of the unit frame 11. The slid bottom plate 12 is housed in the planting machine body 2 together with the folk 3. COPYRIGHT: (C)2008,JPO&INPIT