Plants are large with an upright growth habit. The stems are unpigmented with nonconscpicuous wings and slightly swollen nodes. The leaves are large, light green and rugose in appearance. Flowers are medium-sized and moderate in number. Buds are green.
Corolla is white and anthers yellow.
Tubers have a smooth, white to buff colored skin that may take on a slight pink color when exposed to low intensity light. They have an oblong, slightly flattened shape. Eyes are shallow, moderate in number and widely spaced near the stem end. Dormancy is short. CalWhite is resistant to most internal and external defects including growth cracks, second growth, shatter bruise, hollow heart and heat necrosis.