PURPOSE: To provide a plant cultivation system capable of collectively controlling a plurality of plants (trees, flowers, foliage plants, etc.) dispersedly arranged in a room such as atrium.

CONSTITUTION: A plurality of growth tanks 401-4016 for the hydroponic culture of plants are dispersedly arranged in a showroom 1. Each growth tank 401-4016 is connected to an aeration pump 30 through a water-feeding pipe 41 for each tank and each water-feeding pipe 41 is provided with a solenoid valve 321-3216 corresponding to each growth tank 401-4016. Water discharged from each growth tank 401-4016 is recovered and circulated through a circulation system. The solenoid valve 321-3216 corresponding to each growth tank 401-4016 is periodically opened and closed by a controller 10.