Vietnamese Mickey Mouse plant, Hoa Mai, Mai Vang. Traditional Vietnamese New Year plant. The spectacular yellow flowers of this plant make it very popular in southern Vietnam, where the plant is purchased during Lunar New Year. In Vietnamese, the variety of O. integerrima whose flowers have five petals is called Mai Vang (yellow mai), whereas Mai Nui (mountain mai) flowers have between five and nine petals. A must for exotic plant collection, this is a rather slow growing, medium size shrub that can be trained into miniature tree. In winter the plant is covered with pretty bright yellow flowers, believed to bring good luck and prosperity. They are followed by cute shiny black berries on bright red sepals that resemble the face of Mickey Mouse. The plant is easy to grow and relatively cold hardy (to light freeze). This species has large oval leaves.