PROBLEM TO BE SOLVED: To improve the detaching operation of a plate for cultivation arranged in a line shape and the workability of harvesting operation.SOLUTION: A plant cultivation device 100 that cultivates a plant by arranging two or more cultivation plates 2 having a substantially rectangular plate shape and retaining a plant in a line shape, includes a string shape body 7 one end of which is connected with the cultivation plate 2 positioning at the tip side of a line direction, and which extends to a base end side along a line direction, and the two or more cultivation plates 2 can be moved to the base end side along a line direction.【課題】列状に配置した栽培用プレートの取り外し作業及び植物の収穫作業の作業性を向上させ。【解決手段】植物を保持する概略矩形板状の複数の栽培用プレート2を列状に配置して植物を栽培する植物栽培装置100であって、列方向の先端側に位置する栽培用プレート2に一端が接続されて、列方向に沿って基端側に延びる紐状体7を有し、複数の栽培用プレート2が列方向に沿って基端側に移動可能に構成されている。【選択図】図1