PROBLEM TO BE SOLVED: To greatly promote the growth of plants. The disclosed plant production method includes controlling the light source so that the photosynthetic photon flux density of light received by the plant from the light source fluctuates. [Selection diagram] Figure 1【課題】植物の成長を大きく促進させる。【解決手段】開示の植物生産方法は、植物が光源から受ける光の光合成光量子束密度にゆらぎが生じるように前記光源をコントロールすることを含む。【選択図】図1