just to share the link on another option of Vertical Green Wall.
http://www.eco-question.com/the-vertical-garden-on-concrete-walls-a…
Designed and created by Patrick Blanc, but very costly on maintenance issues.
Materials and constructions:-
The Vertical Garden is composed of three parts: a metal frame, a PVC layer and a layer of felt. The metal frame is hung on a wall or can be self-standing. It provides an air layer acting as a very efficient thermic and phonic isolation system. A 1 cm.-thick PVC sheet is riveted to the metal frame. This layer brings rigidity to the whole structure and makes it waterproof.
A felt layer, made of polyamide, is stapled on the PVC. This felt is rot proof and its high capillarity allow an homogeneous water distribution. The roots grow on this felt.
Plants are installed on this felt layer as seeds, cuttings or already grown plants. The density is about thirty plants per square meter. The watering is provided from the top. Tap water must be supplemented with nutrients. Watering and fertilization are automated.
The whole weight of the Vertical Garden, including plants and metal frame, is lower than 30 kg per square meter. Thus, the Vertical Garden can be implemented on any wall, without any size or height limitation.
