A molded body for improving the cultivating conditions of plants includes at least one tapering projection. The molded body is disposed such that the projection extends into a plant substrate from the bottom. The projection is a highly porous material for providing an exchange of water by capillary forces and/or air, between the interior and the area surrounding the projection. The molded body comprises a depression provided opposite the projection and serving as a water reservoir that is spaced apart from the plant substrate.
