I have seen sorghum used to denote two completely different plants.
1. Sugar cane that Paus texted about.
2. A type of grain feed to cattle and particularly bird feed, a red, very hard round seed about 1/8 inch which is from a pod or cluster of seeds that are combined (tractor) in the field.
Mr. BenFramed, I think you are referring to sugar cane, is this correct?
Van