A system for cultivating plants or vegetables, comprising: - a carrier for holding trays accommodating the plants or vegetables to be cultivated, the carrier having an interior formed by a bottom and raised edges extending circumferentially along the bottom to form a container for holding a liquid for cultivating plants or vegetables, and an opening arranged at the bottom; - a frame to support the carrier; - a supply duct for supplying the liquid towards the carrier, the supply duct arranged at least partly under the carrier; - a sprayer device which is at one end fluidly connected to the supply duct and which is at the other provided with a nozzle to direct a flow of liquid to the interior of the carrier; wherein the sprayer device is arranged through the opening of the carrier, the nozzle protruding into the interior of the carrier when the carrier is positioned on the frame.