The invention includes a box with a water inlet on top, drainage outlets in the bottom, and multiple nursing cells horizontally and vertically arranged inside. The nursing cells are permanently linked inside the box. Each nursing cell has reservoir grooves in the bottom, and light and air circulation cells around all sides. A slit is placed on adjacent walls of nursing cells in each row, and also in each column, thereby connecting two adjacent nursing cells. The planting module is integrated, ready for use without any assembly required. Light and air circulation cells around nursing cells provide sufficient sunlight for growth of the plants inside. Reservoir grooves in the cell bottom can better keep moisture and nutrients inside. Horizontal and vertical slits in the cell walls provide even and rapid distribution for water that enters the module.