Helleborus WINTER JEWELS™ 'Onyx Odyssey'Helleborus WINTER JEWELS™ 'Onyx Odyssey'

Helleborus WINTER JEWELS™ ‘Onyx Odyssey’


This plant is no longer for sale directly from TERRA NOVA® Nurseries. However, it may still be available through one of our Licensees or Retail Sources.


Take a dark voyage into the world of double slate, purple and black flowers. Long lasting bloom color, which doesn”t fade to green, makes this strain a better value in the retail store. One of the world's top hybridizers, Marietta O'Byrne has created this wonderful WINTER JEWELS™ Strain. A delight in the winter garden. Deer resistant!

USDA Hardiness Zone(s): 5-8
Size (HT/W/FL HT): 12″ / 24″ / 14″
Exposure: Part Shade, Full Shade
Bloom Time(s): March, April, May

Common Name Double Hellebore
Family Ranunculaceae
species x hybridus
Plant Series
Plant Type
Hardiness Zone , , ,
Growth Habit
Size (HT/W/FL HT) 12" / 24" / 14"
Bloom Time , ,
Growth Rate
Most Active Growing Season ,
Flower Color
Foliage Color
Soil (Garden) Needs good drainage in fertile, humus rich soil.
pH 6-7
Exposure ,
Special Uses , , ,
Nutritional Needs 150 - 200 ppm
Dormancy Dormancy Required, Dormant in Winter
Water (Greenhouse) Keep evenly moist
Water (Garden) Average
How Different? This is an excellent large flowered double strain in slate, purple and black shades. Flower color doesn't fade to green.
Landscape Value Mixed beds, cottage garden, understory.
Finish Time to 4" 8 - 10 weeks
Grower Notes For spring blooming plants, transplant the summer before. Helleborus grow best (greenhouse production) when day temperatures are 50-65° F and night temperatures are 45-55° F. Spring/Summer growing: 50% shade in the northern states, 70% shade for southern states is beneficial.