Growth of taro (Colocasia esculentaL. Schott) ‘Alafua Sunrise’ and ‘Niue’ was recorded in a high (16 mm water/day) and in a low (5.8 mm water/day) watering‐level treatment. Recording took place at intervals for a period of 21 weeks, when corms had just passed optimum maturity. Leaf, root, and corm growth measurements were all higher in the high watering‐level treatment; with corm fresh and dry weights reaching up to 80% higher than in the low watering treatment. The harvest index and water use efficiency are both generally higher in the high watering‐level treatment. The harvest index tended to be higher in ‘Niue’ and water use efficiency tended to be higher in ‘Alafua Sunrise’. The increased corm weight in the high watering‐level treatment may have been attributed to the earlier increased leaf and root growth. The expected better corm growth of the drought tolerant ‘Alafiia Sunrise’ in the low watering‐level treatment did not occur in this experiment; possibly because it was conducted in low light conditions.