A cardboard packaging is produced from a flat cardboard blank by simple manual folds and without using tools, and is used for packing elongate objects having bent ends. The cardboard packaging has a rectangular central portion and two rectangular side portions which are symmetrically arranged on opposing sides of the central region so as to be inclined at the same angle relative to the central portion, such that a concave upper face and a convex lower face of the cardboard packaging result. The front faces of the side and central portions, and the rear faces of the side and central portions each form parallel planes, overlap regions resulting between the side portions and the central portion. The surfaces of the side portions are each connected to the surface of the central portion by two tuck-in flap connections designed as counter-tuck-in flap connections.