Buds are green. Corolla is white and anthers orange. Tubers have a heavily, and uniformly, russeted skin and white flesh. They have an oblong, slightly flattened shape. Eyes are shallow, moderate in number and well-distributed.
Dormancy is medium.
Russet Nugget is resistant to most external and internal tuber defects including second growth, growth cracks, hollow heart and blackspot bruise. 1 tubers is high. It is resistant to common scab, leafroll-induced net necrosis, Verticillium wilt and both tuber and foliar phases of early blight. Tubers have an exceptionally high specific gravity, a high concentration of vitamin C and good culinary and processing quality. Russet Nugget has a tendency to produce a high number of small tubers under conditions typified by high levels of nitrogen fertilizer and high irrigation.