PROBLEM TO BE SOLVED: To provide a plant cultivation device capable of growing an object plant by supplying water to a predetermined portion on a vertical or a comparatively steep inclined surface using a plant growing body.SOLUTION: A shelf board body Ap is erected between longitudinal plate parts Af1 of a holding structure body outer frame part Af in a growing body holding structure body A, and plant growing bodies J1, J2 are held on the shelf board body Ap and a bottom plate part Af2. A water retention body K is held on a shelf-like projecting part Bp and a rear part bottom plate part Bf2 provided on an external structure body outer frame part Bf in an external structure body B. A front outer frame part Bff is externally connected to the holding structure body outer frame part Af from the rear side. A front upper part of each external route part Bs confronts the rear lower part of each plant growing both holding oart A1, and the front lower part of each external route part Bs confronts the rear upper part of each plant growing body holding part A1. A discharge small hole Brd is provided extending over the whole length in the lateral direction in a fixed height position of an upper vertical plate part Bf4 of a water receiving and supplying part Br.【課題】 植物生育体を用いて垂直面又は比較的急傾斜の面において、所定の箇所に給水することにより、対象植物を生育することが可能な植物栽培装置の提供。【解決手段】 生育体保持構造体Ａにおける保持構造体外枠部Ａｆの縦板部Ａｆ１間に棚板体Ａｐを架設し、棚板体Ａｐ及び底板部Ａｆ２上に植物生育体Ｊ１・Ｊ２を保持する。外部構造体Ｂにおける外部構造体外枠部Ｂｆに設けた棚状突部Ｂｐ及び後部底板部Ｂｆ２上に保水体Ｋを保持する。前側外枠部Ｂｆｆを保持構造体外枠部Ａｆに対し後方から外嵌結合する。各植物生育体保持部Ａ１の後側の下部に各外部経路部Ｂｓの前側の上部が相対し、各植物生育体保持部Ａ１の後側の上部に各外部経路部Ｂｓの前の下部が相対する。受給水部Ｂｒの上垂直板部Ｂｆ４の一定高さ位置における横方向全長にわたり吐出小孔Ｂｒｄを設ける。【選択図】 図７
