The invention relates to a pressed soil pot of substantially rectangular cross section. In order to limit the use of raw material, in this case soil, grooves (4) are arranged in the side walls of the soil pot. The grooves preferably have a semi-circular section. This enables arranging of two separate grooves in one operation via compressing of the soil pots. A first embodiment of a device comprises a large number of members for arranging grooves simultaneously. A second embodiment comprises only a single member so that the operation must be performed a great number of times. The member for arranging grooves can for instance be formed by a drill (24) or by a hollow pipe (23). <IMAGE>
