PROBLEM TO BE SOLVED: To provide a plant growing unit that can accelerate the growth of a plant.SOLUTION: A plant growing unit 1 includes: a plant installation member 10 which has a holding part having a side part which is shaped so as to surround at least a portion of a plant and an opening part which is opened to one end portion of the side part and projects a stem of the plant, and changes the orientation of the opening upward or downward an illumination device 20 which is installed on the lower side of the plant installation member and applies light toward the plant installation member and a housing which has a storage chamber 2I which accommodates the plant installation member and the illumination device, partitions the storage chamber and outside.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】植物の成長を加速させることができる植物育成装置を提供する。【解決手段】植物育成装置1は、植物の少なくとも一部を取り囲む形状の側部、前記側部の一端部に開口して前記植物の茎を突出させる開口部を有する保持部を備え、前記開口部の向きを上方又は下方に変更する植物設置部材10と、前記植物設置部材の下方に設置されて、前記植物設置部材に向けて光を照射する照明装置20と、前記植物設置部材及び前記照明装置を収納する収納室2Iを有し、前記収納室と外部とを仕切る筐体と、を含む。【選択図】図3