PROBLEM TO BE SOLVED: To provide a wall surface greening tool which can be installed vertically and horizontally side by side by connecting by a simple means according to the size of a wall surface. SOLUTION: The wall surface greening tool has an upper part and a lower part, and a step is provided between the upper part and the lower part. The lower part has a second recess on a surface opposite to the wall side surface, and the center line of the first recess and the center line of the second recess are on the wall side surface or the wall side. It is on the same line when viewed from the opposite side of the surface. A plurality of the first recess and the second recess may be provided in a direction perpendicular to the alignment direction of the upper portion and the lower portion. [Selection diagram] Fig. 1【課題】壁面の大きさに合わせて、簡易な手段で接続して、縦横に並べて取り付け可能な壁面緑化用器具を提供する。【解決手段】上段部と下段部とを有し、上段部と下段部との間に段差が設けられた壁面緑化用器具であって、上段部は、壁側の面に第1の凹部を有し、下段部は、壁側の面とは反対の面に第2の凹部を有し、第1の凹部の中心線と第2の凹部の中心線は、壁側の面又は壁側の面とは反対の面から見たとき同一線上にある。第1の凹部及び第2の凹部は、上段部と下段部の並び方向とは直角な方向に複数個設けることができる。【選択図】図1