A genus of blooming plants in the sunflower family is called Melampodium. These tough plants are indigenous to tropical and subtropical areas.Melampodium is a floppy, tall-growing annual that can grow to a height of two feet or more.The white flowers have yellow centers and are bigger than a dime but smaller than a nickel. They smell like honey and are highly fragrant. Blooms draw bees, butterflies, and jealous neighbors.The Melampodium plant, with its profusion of yellow flowers that resemble tiny suns, is like a ray of light in your yard. Their upbeat appearances instantly improve the atmosphere and infuse the area with warmth and excitement.