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Helleborus × sternii Blackthorn Strain
Helleborus × sternii Blackthorn Strain
Garden Diary

Date purchased or acquired:

Where acquired:

Location in the garden:


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Helleborus × sternii Blackthorn Strain

Hybrid Lenten Rose

USDA Zone: 6-9

Plant number: 1.256.850

This excellent hybrid strain forms clumps of deeply-cut grey-green foliage with exotic bold veining and marbling. In early spring, upright purple stems hold sprays of small nodding green flowers, flushed with pink. Performs best in regions with a mild maritime climate. Gardeners in colder climates would be wise to mulch around the base of the clump with leaves in very late fall. Plants should be trimmed only right after blooming, if at all. Plants prefer some direct sun with protection from afternoon heat. Evergreen. CAUTION: Harmful if eaten/Skin irritant.

Further details for
Helleborus × sternii Blackthorn Strain

Optimal Growing
Appearance and
Sun Exposure
  Full Sun or
  Partial Shade
Soil Type
  Normal or
Soil pH
  Neutral or
  Alkaline or
Soil Moisture
  Average or
Care Level
Flower Colour
  Light Pink
Blooming Time
  Early Spring
  Mid Spring
  Late Spring
  Late Winter
Foliage Color
  Deep Green
  Grey Green
Plant Uses & Characteristics
  Accent: Good Texture/Form
  Alpine & Rock
  Cut Flower
  Deer Resistant
  Rabbit Resistant
   30-50 cm
   12-20 inches
   30-45 cm
   12-18 inches
Foot Traffic
Growth Rate
Disclaimer: This information is presented for reference only. This plant is not currently part of our Heritage Perennials lineup.