A riding mower includes two (left and right) mower blades, a mower deck, and two motors for rotating the mower blades. The mower blades are provided adjacent to each other, and one of the two mower blades is disposed obliquely in front of the other mower blade. In a plan view, the left mower blade is rotated clockwise and the right mower blade is rotated counterclockwise. A combined air flow is generated in the mower deck, and mowed grass is discharged to the outside of the mower deck together with the combined air flow. The rotational speed of the forward mower blade is set higher than the rearward mower blade. The speed of the air flow generated by the forward mower blade is higher than the rearward mower blade. The combined air flow is generated and the mowed grass is discharged rearward of the mower deck.
