Plant cultivating apparatus

PURPOSE: A multistage cultivation apparatus for crops in a plant factory is provided to reduce the cultivation time, and manpower for cultivating crops. CONSTITUTION: A power supply unit (150) supplies electricity for cultivating crops. A cultivation bed unit (160) includes plural cultivation beds having a structure for flowing a nutrient solution in the inside. A controller (130) receives information regarding the temperature, the humidity, and the CO2 level of a plant factory, and controls the cultivation environment for the crops based on the information. A water supply unit (120) supplies water and the nutrient solution to the cultivation beds. A lighting unit (170) controls the wavelength, the intensity, and the light emission period of an artificial light source, and emits light for cultivating the crops. An air conditioning unit (110) controls the temperature and the humidity for cultivating the crops. A sensor unit (140) collects information of the temperature, the humidity, and the CO2 level inside the plant factory, and the pH of the nutrient solution.