a spreader assembly with surface - clearing blower includes a rotary or broadcast spreader mounted on a frame for distribution and deposition of granular material in an area proximate the spreader assembly , a blower also mounted on the frame and with one or more ducts or hoses for conveying forced air to a surface proximate the spreader assembly to be cleared of deposited material . granular material may include seed , ice - melt compound or salt , or fertilizer or other lawn or garden amendment or additive . the frame is mounted on the powered drive unit of a walk - behind mower to replace the mower deck .