Annual. Broomfield, Colorado, the home of Botanical Interests, was named after the broomcorn plant around 1900 when a lot of farmland was devoted to growing it. Brooms were traditionally made from the straw-like fibers after stripping off the seeds. ‘Broom Corn’ is not related to corn, but is actually a sorghum, a member of the grass family. Instead of growing tassels and ears, it is topped by richly colored shiny seeds. Harvest them for fall décor and dried arrangements, or grow enough to make your own broom!