Onyx Odyssey Lenten Rose
Helleborus orientalis 'Onyx Odyssey'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
20 inches
Width
24 inches
Light
Partial Sun, Shade
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Prefers moderate humidity
Lifespan
Long-lived perennial
Native To
Garden origin
Toxicity
Toxic to pets and humans if ingested
The Story
Plant Bio
Helleborus x hybridus, commonly known as Lenten Rose, are tough, long-lived, evergreen perennials with leathery, palmately divided leaves. They are prized for their cup-shaped, nodding flowers that bloom in late winter and early spring. A member of the Winter Jewels series, 'Onyx Odyssey' is prized for its large, double flowers in shades of deep slate-purple to near-black, often with contrasting yellow stamens.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck mature rhizomes 2 inches deep in well-draining soil.
- Mist seedlings regularly to maintain soil moisture.
- Plant in partial shade to protect from harsh sun.
- Water consistently, especially during dry periods.
- Apply organic compost in early spring for nutrients.
- Mulch around plants to retain moisture and suppress weeds.
Pro Tip
Use shaded, well-drained soil with plenty of organic matter for best results.
Keep It Thriving
Care Guide
Do
- Water consistently to keep soil moist but not soggy 🌱
- Apply mulch annually to conserve moisture
- Prune dead or damaged leaves in early spring
Don't
- Avoid overwatering to prevent root rot ❌
- Don’t expose in full sun, especially in hot climates
- Refrain from disturbing the roots unnecessarily
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Propagate | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Onyx Odyssey Lenten Rose questions
What zones can Onyx Odyssey Lenten Rose grow in?
Onyx Odyssey Lenten Rose is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Onyx Odyssey Lenten Rose deer resistant?
Yes — Onyx Odyssey Lenten Rose is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Onyx Odyssey Lenten Rose bloom?
Onyx Odyssey Lenten Rose typically blooms in early spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Onyx Odyssey Lenten Rose need full sun?
Onyx Odyssey Lenten Rose does best in part shade.
More Helleborus to compare
Hellebore Wedding Party Mix
Helleborus x hybrida 'Wedding Party Mix'
Lenten Rose Hybrid Mix
Helleborus x hybrida 'Mix'
Lenten Rose Double Queen Strain
Helleborus x hybridus 'Double Queen Strain'
Lenten Rose Hellebore
Helleborus orientalis 'First Dance'
Peppermint Ice Lenten Rose
Helleborus x hybrida 'Peppermint Ice'
Lenten Rose
Helleborus orientalis 'Tropical sunset'
Keep exploring
Explore the genus
Collections featuring this plant
Grow Onyx Odyssey Lenten Rose with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
