Powdered plant-activating agent

The present invention provides a powdery plant vitalizer and a powdery plant vitalizer composition which are resistant to the oozing of effective components and from which effective components are easily dispersed when the vertilizer is in contact with water to give vitality to plants. Specifically, the present invention relates to a powdery plant vitalizer containing a particle containing at least one compound (A) selected from a specific monohydric or dihydric alcohol (A1), a specific ether compound (A2), a specific fatty acid or its ester compound (A3), a specific organic acid derivative (A4) and a glycerin derivative (A5), an emulsifying-dispersing agent (B) and water-soluble sugars (C) or a particle containing the component (A) and water-soluble sugars (C') having an emulsifying and dispersing function, the particle having a structure in which the component (A) is dispersed in the form of an oil droplet in the particle, to a method of producing the powdery fertilizer and to a powdery plant fertilizer composition containing at least one selected from these powdery plant fertilizers and a fertilizer component.