PROBLEM TO BE SOLVED: To provide a self-standing supporting tool for young seedlings, capable of making a position of a support part conform to the extension of a stem length, and easily holding in a storage part without damaging stems.SOLUTION: A self-standing supporting tool 1 includes a prop 2 placed in a standing position on soil S, and a holding-back member 3 supported on the prop 2 in a relative vertical motion free manner. The prop 2 is unitedly formed by a synthetic resin, and includes a bar-like body 4, a guard part 5 on the lower part of the body 4, a penetrating part 6 below the guard part 5, a picking piece 7 on the upper end part, and a retaining piece 8. The picking piece 7 continues to the upper end part of the body 4 and refractedly extends laterally. The retaining piece 8 continues to the edge of the picking part 7 and refractedly extends downward. The holding-back member 3 is made of an elastic synthetic resin, has on one end a ring-like support part 9 to freely pierce the prop 2 into, and has on the other end a grasping part 10 elastically grasping the stems of a young seedling P. The support part 9 is inserted outside into the prop 2, can move to the body 4 through the retaining piece 8 and the picking piece 7, and stops at the guard part 5.COPYRIGHT: (C)2014,JPO&INPIT【課題】茎丈の伸長に支持部の位置を追従させ、茎を傷つけることなく容易に収容部に保持できる幼苗の自立支持具を提供する。【解決手段】自立支持具1は、養土Sに植立される支柱2と、支柱2に相対上下動自在に支持される引き止め部材3とを具備する。支柱2は、合成樹脂で一体成形され、棒状の本体4と、本体4下部の鍔部5と、鍔部5より下方の突き刺し部6と、上端部の摘み片7、抜け止め片8を具備する。摘み片7は、本体4の上端部に連続し、屈折して側方へ延びる。抜け止め片8は、摘み部7の先端に連続し、屈折して下方へ延びる。引き止め部材3は、弾性合成樹脂製で、一端側に支柱2を自在に貫通させるリング状の支持部9を有し、他端側に幼苗Pの茎を弾性的に把持する把持部10を有する。支持部9は、支柱2へ外挿され、抜け止め片8、摘み片7を経て本体4まで移動でき、鍔部5で停止する。【選択図】図1