This invention is for tracking at least one plant. A method of this invention comprises: putting at least one seed or at least one stem in a corresponding at least one pot; positioning a corresponding at least one RFID tag with respect to the seed or stem in a manner, wherein the RFID tag comprises a strap; packaging a harvested material into a packaged product and attaching the RFID tag from the potted plant, or a product RFID tag that is associated with the plurality of tags to the packaged product; confirming a request for authorization by a RFID buy card; and after confirming ID information, transferring at least one product.