To provide a plant keeping agent capable of realizing long life of plants while ensuring flexibility of use and convenience of handling.SOLUTION: A plant 11 enveloping the root of a rooted plant 11 with a covering material having air permeability and water permeability, such as a nonwoven fabric, the plant 11 wrapped with a covering material with a covering material is inserted into and held in the tubular member 201, The cylindrical member 201 in a held state is stored in the outer packaging bag 301. When water W is put in the outer packaging bag 301, water W is supplied to the roots of the plant 11 wrapped in the covering material through the tube opening at the lower end of the tubular member 201. A plurality of openings 202, for example slits, are formed in the tubular member 201 along the axial direction, and depending on the water level of the water W put in the outer packaging bag 301, the water W Is supplied. At this time, the covering material enveloping the roots of the plant 11 is pressed against the inner peripheral surface portion of the tubular member 201, so that the plant 11 is held by the tubular member 201.BACKGROUND OF THE INVENTION【課題】用途の柔軟性と取り扱いの利便性とを確保しながら、植物の長寿命化を実現することができる植物保持剤を提供する。【解決手段】通気性と透水性とを有する被覆材、例えば不織布で根付き植物11の根を包み込み、被覆材で根を包み込んだ植物11を筒状部材201に挿入して保持し、植物11を保持した状態の筒状部材201を外装袋301に収納する。外装袋301に水Wを入れれば、被覆材に包み込まれた植物11の根に、筒状部材201の下端の筒口を介して水Wが供給される。筒状部材201には軸方向に沿って複数の開口部202、例えばスリットが形成されており、外装袋301に入れた水Wの水位によっては、開口部202からも植物11の根に水Wが供給される。このとき植物11の根を包み込んだ被覆材は、筒状部材201の内周面部に圧接するので、植物11は筒状部材201に保持される。【選択図】図1
