Abstract: A grain propelled grain spreader having a hopper disposed beneath an opening in the upper end of a grain bin and having slides disposed beneath and receiving grain from a hopper, the slides extending downwardly and outwardly from the hopper so that grain flowing therefrom can be distributed around the inside of the bin as the grain is deflected from the slides by deflectors spaced along the sides, the hopper having fins mounted therein at angles with respect to the vertical such that grain hitting the fins will cause the hopper and slides to rotate together.