The first light frosts are still a few weeks away in Nebraska. However, planning for these events should be considered by beef producers grazing sorghum-related plants. In addition to sorghum, plants such as sudangrass, shattercane, and milo fall under this same spectrum of review as colder temperatures draw near. Following a freeze, these forages can be highly toxic with prussic acid. Drought, pasture clipping, and overgrazing are other events that can cause increased levels of prussic acid.