Sioux is a uniform round, red, slightly scaly russet variety of medium maturity. The variety is resistant to scab (Streptomyces scabies) and susceptible to Fusarium, Verticillium and late blight. In Nebraska, Sioux produces moderate to high yields, but higher yields of U.S. #1 potatoes when compared with the standard red table varieties Norland and Bounty. The specific gravity of Sioux is higher than that of the standard red table and white chipping varieties Haig, Platte and Kennebec. The variety is suitable for chipping and the production of frozen products. When grown as a late summer crop, Sioux is of good color and carries to market in better condition than the standard red varieties. In the 12 States in the North Central Regional Trials, Sioux was equal to the standard variety Red Pontiac in total yield and superior in yield of U.S. #1 potatoes. The specific gravity of Sioux was higher than that of Irish Cobbler or any of the other standard varieties. The yield of Sioux was as high and the specific gravity was higher than any of the standard varieties in Texas and Alabama trials.