A succession of suspended conduits are arranged on filiform and parallel supports (2). The upper sheet (1) has holes (6) for planting the respectives plants, the lower sheet (3) without holes acts as a collector, and the intermediary sheets (4) have the same number of holes which are offset longitudinarily with respect to the upper sheet (1). The conduits are assisted by the tube (8) forthe supply of water and nutrients and temperature control. From said tube a microtube or similar comes out above the upper sheet, one for each watering unit, for its individual supply. The liquid comes down in cascade through the conduits and through the holes (7, 7') down to the lower conduit (3), and guides the roots of the plants through the same path as the nutrient. <IMAGE>
