Helleborus argutifolius (syn. Helleborus corsicus) – A much underused species with bold clusters of large clear green blooms from February to April. Corsican Hellebore also features glossy deep green foliage with serrated edges that is reliably evergreen through our coastal winters. This species is quite sun tolerant and grows 2-3′ tall and 2′ wide. Hardy to zone 6.
Helleborus purpurascens ‘Red Power’ – This cultivar of a rarely offered species (native to eastern Europe) features cup-shaped pendulous blooms of maroon-red. The flowers are borne from February to April and usually open before the new foliage emerges. ‘Red Power’ grows 12 to 18 inches tall and is hardy to zone 5.
Helleborus niger – The Christmas Rose can be one of the more difficult Hellebores to grow, mostly because it dislikes being transplanted. The large (2-3″ wide) pure white blooms appear from December to March and often fade with hints of pink, bronze or green. This species features dark green leathery foliage that is reliably evergreen. Grows 12″ tall and 18″ wide. Hardy to zone 4.
Helleborus x sternii ‘Hot Flash’ – (H. argutifolius x H. lividus) This recent introduction from Terra Nova Nurseries features attractive silvery-green serrated foliage with red veining and stems. The pale green flowers have a pink flush and starry golden stamens, emerging from March through to May. This evergreen cultivar grows 16″ tall and 18″ wide. Hardy to zone 6.
Helleborus foetidus ‘Wester Flisk’ – A seed strain with finely cut evergreen foliage of greyish-green, which others might describe as a silver overlay. The maroon-rimmed apple-green flowers are present from late winter into early spring and usually borne on contrasting red stems. ‘Wester Flisk’ is also a proficient self-seeder. Grows 18-24″ high and 24″ wide. Hardy to zone 6.