Abstract: A spray device for applying liquid preparations to vegetation comprises a roller-shaped vegetation presser element of adjustable length rotatably carried between the lower ends of two parallel inclined support arms which are adjustable toward and away from each other and which are hinged at their upper ends for swinging movement in a vertical plane, and a spray nozzle supported on at least one of the arms for vertical and horizontal adjustment and located so as to direct a spray toward the area which has just been traversed by the presser element.