PROBLEM TO BE SOLVED: To provide a seedling raising device and a seedling raising method capable of efficiently performing maintenance works such as leaf cut without affecting an electric system such as an illumination light source for seedling existing above seedling raising pots.SOLUTION: In a seedling raising device (1A), seedlings are raised by watering a plurality of seedling raising pots (10) arranged and disposed in a planar manner. The seedling raising device comprises: a seedling raising box (2) which houses a plurality of seedling raising pots (10) arranged and disposed in a planar manner; and watering pipes (5) for ejecting watering liquid, which extend to a side face side of the seedling raising box (2), so that the watering liquid can hit the inside of an opening (11) of each seedling raising pot (10) from the side face side of the seedling raising box (2).SELECTED DRAWING: Figure 1【課題】潅水を適切に行うことにより、育苗ポットの上側に存在する育苗用照明光源等の電気系統に影響を与えることなく、かつ葉掻き等の管理作業を効率よく行い得る育苗装置及び育苗方法を提供する。【解決手段】育苗装置(1A)は、平面的に並べて配設された複数個の育苗ポット(10)に潅水して育苗する。複数個の育苗ポット(10)を平面的に並べて配設された状態で収容する育苗箱(2)と、育苗箱(2)の側面側に延設され、育苗箱(2)の側面側から各育苗ポット(10)の開口(11)内に命中するように潅水液を噴出する潅水配管(5)とを備えている。【選択図】図1