A mower blade for a lawn maintenance device includes an elongate blade having opposed end edges and opposed side edges. The elongate blade is adapted for mounting onto a rotary mower for rotation about a center axis extended transverse to the elongate blade and separating the elongate blade into opposed elongate end portions extended from said center axis. The elongate blade has a blade major axis and defines a curved portion such that the curved portion is opposite a cutting edge. The curved portion extends from the elongate blade in an upward direction where the two meet and curves toward a lower face of the elongate blade. Further examples of the mower blade include the curved portion being offset vertically from a cutting edge to develop lift during rotation and a constant cross-section over most of the blade major axis.
