Abstract: A hydroponic culture procedure and device which provides for attachment of plant roots and further provides channel units for fertilizer liquid. In the device, successively hanged channel units are established on parallel supports. An upper sheet has holes for the implantation of respective plants. A lower sheet, devoid of holes, acts as a sump. Intermediate sheets are provided between the upper and lower sheets, and have the same number of holes as the upper sheet, although longitudinally offset. The channel units are fed by a tube that supplies water and nutrients, and which also provides temperature control. From this tube emerges, above the upper sheet, a micro-tube or similar device for feeding the water to individual plants. The liquid descends in the form of a cascade along the channel units and through the holes down to the lower channel unit, and in turn directs the plant roots along the same path of the nutrients.