Duranta SapphireDuranta repens Sapphire Duranta sapphire features cascading purple flowers which yield to golden colored berries in the fall. Water Requirements: Moderate, average watering. Deeper waterings that are less frequent are recommended to establish roots. Soil: Well draining soil. Growth Rate: Moderate. Bloom Time: Summer. Temperature: Hardy to 20 F. Pruning: Benefits from selective pruning to shape it. With pruning, it can be kept as a smaller shrub.