A machine for transplanting potted seedlings grown in a series of pots linked together without separating them from one another includes a bottom plate having an upwardly curved leading end portion, and a slot formed in its trailing end portion. A soil opener is fitted in the slot and contains a vertically rotatable pot guide. A pair of soil drawing members are attached to the bottom plate behind the soil opener. A pair of side frames are erected on the bottom plate, and have inwardly directed portions converging toward the soil opener. A pair of pot guides are also provided on the bottom plate inwardly of the side frames.