Abstract: A plant pot which not only is capable, when empty, of being conveniently and compactly stored or "nested" in a columnar formation along with other unfilled pots like itself, but also has the ability, after a plant and growing medium have been placed in the pot, to be stacked in any of a number of orderly and stable arrangements among other planted pots, also of the same construction. Stacking of plant-containing pots is made possible by a plurality of interlock stacking grooves provided on the bottom of each pot. Six (6) grooves are provided, and the sides of every other groove define an arced ledge that can be rested upon and abutted against the inner periphery of the rim of another pot so that a number of pots can be arranged to form a securely stacked structure.