Flower Lights (Indigo) From the Leaves of a Bohdi Tree Each string has 20 completely assembled flower lights on it. The strings are 10 feet long and are connectable on both ends. Cords are UL approved 110-120V AC. Indoor or outdoor use. For longest life, keep out of direct sunlight as colors will fade. * No trees were cut for the leaves in the Indigo Blue Flower Lights.