The vine maturity of Castile is main season. Plants are medium to large, initially upright and later spreading and dense. Stems are green with slight purple pigmentation mostly at the nodes. Wings are prominent, straight to slightly waved. Leaves are medium to dark green with four pairs of primary leaflets.
Flowers are violet with white tips.
Tubers are oblong, slightly flattened with shallow eyes. Skin is smooth and white. Tubers are suitable for tablestock, chip and French fry processing. Yield potential is good and specific gravity is considered in the medium range. The good yielding ability and market flexibility are the primary advantages.