An apparatus for cultivating plants may include a cabinet having a cultivation space； a machine compartment separated from the cultivation space and that accommodates a compressor and a condenser； at least one bed disposed in the cultivation space and on which at least one seed package including nutrient solution and seeds is seated； at least one light assembly that radiates light toward the at least one bed； and a water tank disposed in the cultivation space, positioned in front of the machine compartment, and that stores water to be supplied to the at least one bed. The water tank may be inserted into and withdrawn out of the cultivation space.
