An information providing method for an information providing system including a scent imparting apparatus, a scent detecting apparatus (3,4), and an information management apparatus, the information providing method comprising: adding, by the scent imparting apparatus, a scented substance to a plant; transmitting, by the scent imparting apparatus to the information management apparatus, product information that includes added-substance information indicating a first substance that is the scented substance and production information regarding the plant; receiving, by the information management apparatus, the product information; storing, by the information management apparatus, the product information in a production information storage unit; detecting, by the scent detecting apparatus (3,4), a second substance that is at least one of the scented substance or a metabolite of the scented substance released from a target plant; transmitting, by the scent detecting apparatus (3,4) to the information management apparatus, detected-substance information indicating the second substance; receiving, by the information management apparatus, the detected-substance information; transmitting, by the information management apparatus to the scent detecting apparatus (3,4), in a case where the second substance indicated by the received detected-substance information is the same as the first substance indicated by the added-substance information included in the product information stored in the production information storage unit or is the same as a metabolite of the first substance, the production information included in the product information stored in the production information storage unit; receiving, by the scent detecting apparatus (3,4), the production information from the information management apparatus; and presenting, by the scent detecting apparatus (3,4), the received production information. adding, by the scent imparting apparatus, a scented substance to a plant; transmitting, by the scent imparting apparatus to the information management apparatus, product information that includes added-substance information indicating a first substance that is the scented substance and production information regarding the plant; receiving, by the information management apparatus, the product information; storing, by the information management apparatus, the product information in a production information storage unit; detecting, by the scent detecting apparatus (3,4), a second substance that is at least one of the scented substance or a metabolite of the scented substance released from a target plant; transmitting, by the scent detecting apparatus (3,4) to the information management apparatus, detected-substance information indicating the second substance; receiving, by the information management apparatus, the detected-substance information; transmitting, by the information management apparatus to the scent detecting apparatus (3,4), in a case where the second substance indicated by the received detected-substance information is the same as the first substance indicated by the added-substance information included in the product information stored in the production information storage unit or is the same as a metabolite of the first substance, the production information included in the product information stored in the production information storage unit; receiving, by the scent detecting apparatus (3,4), the production information from the information management apparatus; and presenting, by the scent detecting apparatus (3,4), the received production information.