Four cultivars of sweet potatoes (Ipomoea batatas Lam.) were sampled bi-weekly during the period of storage root development Although the root weight increased nearly 8-fold during the sampling period there was only a 35% increase in the number of roots. Alcohol insoluble solids (AIS) and % dry matter generally showed a slight increase throughout the season and specific gravity a slight decrease. Total sugars and reducing sugars failed to show a trend. In contrast, the processed roots tended to become softer as the season progressed. Firmness was related to chronological age of roots rather than harvest date. The later the planting the higher were total and reducing sugars but planting date had no consistent effect on other raw product attributes.