PROBLEM TO BE SOLVED: To provide a wall surface greening system conducting stable and automatic water supply while utilizing rainwater. SOLUTION: The wall surface greening system comprises a panel 1 attachable to a wall surface, a water supply path 3 which is attached to the panel 1, on which a plurality of planters 2 can be set up, and through which plants P in the planters 2 can be supplied with water, rainwater tanks 4 reserving rainwater, and a circulation water-circulating mechanism 5 connected to the rainwater tank 4 and a tap water source to supply the rainwater or the tap water to the water supply path 3 as the circulation water; wherein the circulation water-circulating mechanism 5 is provided with a circulation water-controlling part 8 making control for supplying the rainwater when the amount of the reserved rainwater exceeds the prescribed amount and supplying the tap water when the amount of rainwater reduces under the prescribed amount. COPYRIGHT: (C)2009,JPO&INPIT
