A flowerpot (100) comprising adjustable arms (104) and independent removable snap pins (105) for safe coupling to railings, walls or other supports comprising a container (101) having a lateral edge (102), the adjustable arms (104) comprising a vertical branch (104a) for engaging the container (101) to the support and a horizontal branch (104b) able to be coupled with a lower portion of the lateral edge (102), characterized in that the lateral edge (102) comprises at least two successive trough trenched seats (106) able to be aligned and coupled with at least two successive trough trenched seats (107) comprised in the horizontal branch (104b) via at least one independent removable snap pin (105).