A vegetation cutter includes a frame rod assuming a pole and having a front end and a rear end a cutter head mounted on the front end of the frame rod and including a rotary cutter and a drive motor connected to the rotary cutter controller head mounted on the rear end of the frame rod and including a control circuit for controlling the drive motor and a handle fixed to the frame rod to be held by hands of a user. The cutter head includes a cutter frame for enclosing the drive motor therein, rotatably supports the rotary cutter below the cutter frame and is connected to the frame rod. The cutter frame is comprised of a wall member formed with a plurality of ridgelike ribs projecting inward from a platelike member, each rib having a height between 0.5 mm and 10 mm.
