A household cultivator (1) for cultivating a plant (5) using a culture medium comprises: a cartridge (10) in which a concentrated culture medium (6) is retained; a plant cultivation container (2) in which cartridge insertion parts (4) for inserting cartridges (10) are disposed and which retains a culture medium that is supplied to the plant (5); and a dilution container (20) which is disposed in the plant cultivation container (2), acquires the culture medium (6) supplied by the cartridges (10) that are inserted into the cartridge insertion parts (4), and dilutes the culture medium (6) that is acquired. Thus, a plant cultivator that can be reduced in size and can improve convenience with easy replacement and management is provided.
