Provided is a plant cultivation device whereby the workability in cutting the base of leaves can be improved. The plant cultivation device (1) comprises: cylinder shaped medium holding parts (45 45a 45c) which contain and hold seedling medium (44a 44c) therein are disposed in through holes (41a 41c) in a flow channel member (41) and allow the seedling medium (44 44a 44c) to absorb a cultivation solution and cylinder shaped leaf supporting parts (46 46a 46c) which are provided above the medium holding parts (45 45a 45c) and support from the periphery leaves (91) growing from seeds. The medium holding parts (45 45a 45c) and the leaf supporting parts (46 46a 46c) are configured so that a cutter (50) said cutter (50) being to be used for separating the leaves (91) from the seedling medium (44 44a 44c) can be inserted from outside at the boundary between the medium holding parts (45 45a 45c) and the leaf supporting parts (46 46a 46c).
