Winterberry holly stands out for its vivid red berries, which enliven the plant throughout the cold months and persist into spring. While traditional evergreen holly retains its leaves, this deciduous variant sheds its foliage every fall, amplifying the brilliance of its berries. Its elliptical, dark green leaves span about two to three inches and make way for greenish-white flowers on female plants during spring. For these flowers to mature into clusters of red berries by fall, proper pollination from a nearby male plant is essential.