A grain spreader wherein grain received in the hopper is directed to spreader arms by a spreader cone. The spreader cone has a convergent cone and a divergent cone. The spreader cone has a center opening that allows a first portion of the grain collecting in the convergent cone to pass through and fall through the underside of the divergent cone. The grain spreader further includes support springs that lift the spreader cone upwards into the hopper when the spreader cone is lightly loaded. A center flow choke is configured to throttle the flow of grain through the center opening to partially close the center opening in low grain flow conditions, wherein the center flow choke is mounted to the hopper body such that up and down movement of the spreader cone moves the center opening into or out of engagement with the center flow choke.
