The invention relates to a blade for cutting grasses in general, consisting of a part (1) which is mounted, via the opening (2), on the driving axle of a cutting or scrub clearing machine, said part including at least two small blades (4), each having a sharp front edge determining the leading or cutting edge (5) that extends outwards in a curved outer section (5), while opposite the leading edge (5), there is a rear trailing edge (6) in the form of a propeller aileron, for producing an air flow during the rotation, that generates the ejection of the cut material and suction-lifts the material to be cut.
