The Idaho Russet Burbank variety is typically harvested from mid-September to mid-October each year. It is a late maturing variety. Others such as the Russet Norkotah from Idaho grow to maturity earlier and are typically harvested in mid-August to mid-September. Idaho rules and regulations require that bagged or carton potatoes carry the variety designation right on the package or noted on a quick lock enclosure tag on bags sold in retail outlets such as grocery stores. Potatoes are harvested once a year, then stored for consumption throughout the year. So, in November you may see both varieties mentioned earlier being sold side by side. Our web site has a terrific educational piece, the Foodservice Toolkit, which can be viewed here.