To provide a negative ion planter creating homogeneous negative ion shower comprising only a pure negative ion, and irradiating plants with negative ions according to growth of the plants.

The negative ion planter comprises negative ion generators 1 generating only negative ions, a negative ion module 2 where a plurality of the negative ion generators 1 are detachably connected to one another in parallel to be flatly arranged at timely intervals, and a fixing tool 3 vertically movable at timely intervals from the top of the plant to be irradiated with the negative ions via the negative ion module 2. Such a structure of the negative ion planter results in efficiently and accurately supplying the negative ion shower effective for the plants.

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