<;P>;PROBLEM TO BE SOLVED: To provide a plant raising device for increasing an antioxidative component content in a plant by effectively giving stress to various parts of a plant to be a cultivation object. <;P>;SOLUTION: This plant raising device 1 includes a function of generating and emitting a particulate liquid 3 (charged particulate liquid containing radical and hydrogen peroxide solution) containing a substance for increasing an antioxidative component content in a plant 2 by giving stress to the plant 2. <;P>;COPYRIGHT: (C)2011,JPO&INPIT