PROBLEM TO BE SOLVED: To provide a water retention bag for flowering plants in which root portions of flowering plants are inserted for retaining water and keeping healthy when flowering plants such as cut flowers or the like are stored in a transporting container such as a corrugated cardboard box or the like for transportation or storage.SOLUTION: The water retention bag 1 for flowering plants, in which root portions of flowering plants are inserted in transportation of flowering plants, has an outer face 3 composed of a liquid impermeable sheet 2, an inner face 5 composed of a liquid permeable sheet 4 and a water retention body 6 arranged between the outer face 3 and the inner face 5 and an opening 8 is formed at one end and also a flap-like folding back part 9, which is folded back inside at the opening 8, is formed.COPYRIGHT: (C)2011,JPO&INPIT【課題】段ボール箱等の輸送容器に切り花等の花卉類を収納して輸送する際や保管時に、花卉類の根幹部分を挿入して保水養生させるための花卉類用保水袋を提供することを目的とする。【解決手段】花卉類の輸送時において、花卉類の根幹部分を挿入して保水養生させるための花卉類用保水袋1であって、不透液性シート2からなる外面3と、透液性シート4からなる内面5と、外面3と内面5の間に配置された保水体6を有する袋状であって、一端に開口部8が形成されるとともに、開口部8に内側に折り返されたフラップ状の折り返し部9を形成した花卉類用保水袋1を提供する。【選択図】図1