A rotary cutting blade for rotation about a fixed axis. The cutting blade has a generally rectangular planar body section having first and second ends and defining long and short edges. Each end of the cutting blade has both a downwardly oriented (leading) lifting and cutting member, and an upwardly oriented (trailing) lifting member. The downwardly oriented cutting member has a generally flat sharpened section oriented generally parallel to the plane orientation of the body section, and perpendicular to the rotational axis of the blade. The cutting blade can be re-sharpened without removal from a mower or other device.
