A mobile hedging machine includes a hedger frame having an elevated platform supported by a plurality of spaced apart legs to form a passage under which hedges are traversable in a travel direction. A plurality of motor-driven wheels are mounted to lower ends of the legs allowing the machine to be driven and steered. First and second cutter arms extend from generally opposite sides of the elevated platform generally perpendicular to the travel direction. Each cutter arm includes an upper arm positionable generally perpendicular to the travel direction, a lower arm pivotable about an axis generally parallel to the travel direction, and a cutter head attached to a lower end of the lower arm. The cutter arms are preferably offset in the travel direction. A topper assembly is secured to a forward edge of the platform and vertically positionable relative thereto.
