A system for plant cultivation in containers located in a vertical or sloping arrangement on different levels includes a module. The module includes an internal volume for receiving at least one nutritive substrate and at least one plant. The internal volume is delimited by a front wall having at least one opening for the plants to pass through for exposure to light, and a rear wall joined to the front wall. The rear wall has a fixing area for fixing the module to a mounting, and the rear wall includes a partitioning rib projecting into the internal volume to slow flow of water flowing between the levels.
