A plant pot adapted to be stacked geometrically within a lateral 180° radial array with one or more other similar plant pots in tiered alignment offset one level to the next. A back wall (1) of the pot is adapted to be received and interlock with an multi-channelled elongated supporting stem (9) and connector (28B) which are adapted to fastened to any vertical or near vertical surface. The stem (9) has a centrally located hollow channel (22) to receive the connector (28B) located partially within its top and/or bottom portions to connect two or more stems (9) allowing a continuance of plant pots supported in a stacked formation.