Abstract: A device for damaging weeds, the device having a pressure-conveyance unit, which is designed to convey a fluid under pressure, and a fluid-dispensing unit, which is fluidically connected to the pressure-conveyance unit and is furthermore developed to dispense the pressurized fluid to the weed in order to damage the weed, the fluid-dispensing unit including at least one valve that has a piezo-actuator or an electroactive polymer actuator or a magnetoresistive actuator.