Abstract: A modularly constructed column element is proposed for the vertical cultivation of plants which are nourished by wetting the roots with an aqueous nutrient solution, the individual parts of said column element being able to be stacked in a space-saving manner and transported, assembled, disassembled and cleaned very easily. The modular structure of the column element includes a lid part, a base part and at least one wall ring between the lid part and the base part. The wall ring is composed of a plurality of ring segments, in which the planting openings are formed, in which plants can be positioned such that their roots grow into the interior of the column element. The lid part is arranged on the end side on the uppermost wall ring and the base part is arranged on the end side on the lowermost wall ring. The structure of the column element is fixed and stabilized with the aid of tensioning elements which are tensioned on the outer side of the column element between the lid part and the base part.