The invention concerns a plant cultivation device. The device comprises a receptacle having at least one peripheral wall and a bottom wall. The bottom wall has at least one hole opening into an irrigation tube, a region of the bottom wall around the, or each, hole comprising guide means adapted to guide roots of a plant around the corresponding hole to keep the irrigation tube substantially clear.The invention also concerns a cartridge comprising a substrate, adapted to be positioned in this receptacle, the cartridge having a lower face comprising at least one relief adapted to cooperate with the guide means of the receptacle.
