A lawn mower system comprising a wheeled push lawn mower primary cutting deck having auxiliary pivotably attached secondary cutting decks attached thereto. The device powered by a motor that may be electric or an internal combustion engine which provides power to operate blade(s) in a horizontal rotary cutting motion. The cutting blades may be attached to the motor via connector shaft(s) and pulley(s) and may be simultaneously driven with a belt system to cut various widths of lawn. The auxiliary pivotably attached right and left secondary cutting decks are vertically rotatable into downward positions for single, double, or triple wide cutting widths to cut small to very large lawns. The lawn mower system may be stored in a wings-up efficient manner.