Abstract: A cultivating machine such as a powered vehicle has several ground engaging hoes and is arranged for moving these hoes relative to a row of plants to be cultivated. The cultivator includes a device for elevating the hoes with respect to the ground and for moving at least two of the hoes in oppositely disposed sideward motion while they are engaged in the ground so as to enable them to cultivate the area between the individual plants in a given row. Pneumatic piston and cylinder assemblies are used impart sideward movement to the sidewardly movable hoes and suitable control valves connect the pneumatic piston and cylinder assemblies with a source of compressed air carried by the vehicle.