As a result of modern hybridization there are countless new varieties in a wide range of flower colors and combinations of colors. Probably the outstanding characteristic of this perennial is its unusual flowering season, which extends from mid winter into early spring, depending upon the varieties grown. For years, the best known and most frequently grown variety was Helleborus niger, better known as the 'Christmas Rose'. The single flowers, which appear during or shortly after the holiday season resemble the old-fashioned single rose.
Flower colors are white with a tinge of pink, turning purplish-rose and green with age.
Height is about 12 to 18 inches. I think this is one of the more difficult of the Helleborus to grow, and with a choice of all the new ones, it's not nearly as showy. I understand there are hundreds, maybe thousands, of new varieties, some of which have semi-double and double flowers. Of course, not all of them are yet available to the home gardener. It may grow up to 36 inches in height.