The present invention relates to a vertical wall greening unit (1), which keeps plants in a good condition for a long period, and improves work efficiency. The vertical wall greening unit (1) can also be set up in various places, and decreases transportation costs and maintenance costs, and enhances the flexibility of its layout changes and the quality of its design. The vertical wall greening unit (1) comprising: an attachment (3) having a square frame shape, a tower structure (2), to which a plurality of attachments (3) can be attached at a free position along a vertical direction, standing vertically, a planting case (4) having a planting hole with a down-inclined face in order to place plants upwardly at the edge of an open hole, and a plurarity of projecting ribs being formed on the side surface thereof, in order for the planting case (4) to be placed on the attachment (3) at the lower end side of the projecting ribs. With these configuration, the vertical wall greening unit (1) makes it possible to keep plants in a good condition for a long period, and to improve work efficiency. Furthermore, the vertical wall greening unit (1) can be set up in various places, and decreases transportation costs and maintenance costs, and enhances the flexibility of its layout changes and the quality of its design.本發明的課題為提供一種壁面綠化單元及壁面綠化的設置方法,可在良好的狀態下長期保持植物,可作業性佳地配置於各式各樣的場所,可降低運送、管理成本,且植物的佈局變更性、設計性也優良。 本發明的解決手段為一種壁面綠化單元1,包含:四角框形狀的附件3;用以將附件3以複數段可裝卸地安裝於水平方向且上下方向的自由的位置而被立設成垂直狀之構築物2;具有在開口面的端側中能以斜斜朝上植入定置植物的方式朝下方斜斜地傾斜的植入口,及在側面中用以在下端位置與附件3卡合的複數個凸條肋之植栽盆4。藉由該構成,成為可在良好的狀態下長期保持植物,可作業性佳地配置於各式各樣的場所,可降低運送、管理成本,且植物的佈局變更性、設計性也優良之壁面綠化單元1。1‧‧‧壁面綠化單元2‧‧‧構築物3‧‧‧附件4‧‧‧植栽盆