Helleborus x sternii ‘Blackthorn Group’

Helleborus x sternii is a cross between Helleborus argutifolius (Corsican Hellebore) and Helleborus lividus (Majorcan Hellebore), named after Sir Frederick Stern, first brought to public attention in 1947.  It is an herbaceous or semi-evergreen perennial with purplish stems and pinkish … Continue reading →