Definition of the greening of walls
Vegetating and applying the green plants not only onto the artificially built surfaces such as the vertical walls including the walls of buildings, fences, sound-proof walls, and concrete retaining walls, but also the sloped surfaces (Guidelines for greening of vertical surfaces of city structures, Nature Conservation Department, Ministry of the Environment, 1998).

Effect of the greening of walls
Characteristics
1) Environmentally friendly system to use rainwater and the energy from rainwater.
2) Automatic irrigation system operated by various sensors and electronic valves,requiring less management.
3) Automatic system to maintain the optimal conditions for nurturing plants
4) Capability to flexibly adjust the space of the pot box in order to control the greening level depending on the kinds of plants.