Early blooming plants and sensitive vegetation in Buncombe County face a threat from a late-season frost expected to hit the region, according to the National Weather Service (NWS) in Greenville-Spartanburg. The advisory, issued this morning, warns that temperatures could dip below freezing overnight, with mountain valleys expected to be the coldest. This unseasonable cold snap follows a stretch of mild weather, which encouraged many plants to begin their spring growth cycle ahead of schedule. T