The system is based on placing on the façade a suitably anchored metal structure to which is fixed a plastic panel supporting geomesh layers that constitute support for the plants. At the top of these geomesh layers drip irrigation nozzles are arranged, supplied by a water recirculation pipe, and excess water is collected in a channel, which is then filtered, analysed, supplemented with fertilizer and acids, all under computer control. There is also the option to empty the recirculation circuit and add new water treated by reverse osmosis from a tank.