Abstract: An assembly of preferably frusto-conical shell like members for use in hydroponic growing of plants have openings in the walls through which plants can grow and a matrix of rooting material within each shell like member into which the plants are inserted and take root. A liquid collection means is disposed below the lower most shell and a liquid introducing means for introducing liquid nutrient is provided near the top of the rooting matrix. The assembly can also incorporate a means for pumping the liquid nutrient from the collection means to the top of the rooting matrix.