Flowerpot (5) grouping (1) in group can form rectangle, appearance, another aspect, conveying effect larger size in a compact fashion. This allows volume exclusion and optimization. In addition, embodiment according to the invention provides various flowerpots (1) group of relationship between stable. This is achieved in that, at least top edge (4) group (5) formation, when viewed from above, the more specifically triangle of polygon or the mode of rectangle and a side have a groove (9), another other side protrusion (10) corresponding data information. When closely in groups, a flowerpot (1) of protrusion (10) falls into groove (9) other flowerpots (1), stable overall entity is generated.
