Saffron is a Eurasian crocus whose flowers yield a yellow coloring and flavoring agent that is also called saffron. The saffron grows about 16 inches tall, and its long narrow leaves grow directly from the underground corm. The fragrant flowers are purple or white and may be 2 inches long. At the center of each flower is a reddish structure, called the style, which is part of the female reproductive organ. Saffron dye is made from the dried styles and is used mostly to color and flavor foods and medicines.