Daffodils come in many different colours, sizes and even forms. Nearly all have cups—also called coronas—that can be large or small, ruffled or smooth, bowl or trumpet shaped, or nearly flat. Cupped daffodils are very reliable bloomers that are resistant to deer and rabbit damage. The cups are often a different colour than the petals, resulting in a lovely contrast. Large-cupped daffodils tend to be vigorous growers and excellent naturalizers, making them spectacular for mass plantings. Their cups measure more than one-third but less than the full length of their petals. Small-cupped varieties often bloom later and are usually fragrant. Their cups are one-third or less than their full petal length. Cupped daffodils produce one flower per stem.