[Problem] The present invention provides a herbicide composition which can effectively control the growth of a plant that is not desirable for useful plants, is highly safe for useful plants, and can exhibit a high effect at a low dose. [Solution] A herbicide composition characterized by containing, as active ingredients, [a component (A)] selected from the group consisting of a triazine derivative represented by formula [X] (wherein R represents a lower alkyl group having 1 to 6 carbon atoms; and X represents a halogen atom) and a salt of the triazine derivative and [a component (B)] as mentioned in the description.