The present invention inexpensively provides seed paper whereby it becomes possible to achieve the labor-saving in a seeding work to a great extent in the production of an immature vegetable or the like by hydroponic culture. A thin-paper-type long base sheet, which is made from water-degradable paper such as toilet paper, is fed from a base sheet feeding section A, and then a water-soluble adhesive agent is applied at predetermined intervals on one surface of the long base sheet in an adhesive agent application section C. Multiple seeds 13 are placed on the one surface of the long base sheet 11, and then the long base sheet 11 is drawn to remove seeds that are not adhered to the adhesive agent from the long base sheet. Subsequently, the long base sheet 11 is sandwiched and crimped between a pair of rollers 51 and 52 that are softer than the seeds 13 in a base sheet transfer/seed crimping section E to produce a seed paper 15. in the long base sheet 11 in the seed paper 15, multiple recesses are provided each
