perennial

Green Giant Hellebore

Helleborus foetidus 'Green Giant'

The Story

Plant Bio

Helleborus foetidus, known as the Stinking Hellebore, is a perennial evergreen with clump-forming growth, deeply divided dark green foliage, and nodding clusters of bell-shaped green flowers often tinged with purple in late winter to early spring.

The 'Green Giant' cultivar is distinguished by its especially robust, vigorous growth and brighter, more vivid green flowers that enhance its ornamental appeal during the winter months.

Uses & Benefits:

Ornamental UsesProvides evergreen foliage and early spring blooms, adding structure and color to shaded gardens.
Practical UsesResistant to deer and rabbits, requiring minimal maintenance.
Ecological BenefitsSupports pollinators with early nectar sources.
SpeciesHelleborus foetidusStinking Hellebore

Essentials

At a Glance

Plant Type

Perennial

Height

18 inches

Width

24 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

Long-lived perennial

Native To

Southern Europe

Toxicity

Toxic to humans and pets if ingested

Bloom period

Late winter

J
F
M
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M
J
J
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S
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In flower about 1 month of the year

Planting

How to Grow

  1. Tuck seeds or divisions into well-prepared soil in early fall.
  2. Mist cuttings regularly to maintain humidity.
  3. Mulch around plants to retain moisture and suppress weeds.
  4. Protect from harsh winter winds with a windbreak.
  5. Water consistently during dry spells for healthy growth.
  6. Divide clumps every 3-4 years in early spring for propagation.

Pro Tip

Plant in partial shade with rich, well-drained soil for best results.

Keep It Thriving

Care Guide

Do

  • Water regularly to keep soil moist 🌱
  • Apply mulch to conserve moisture
  • Divide in early spring

Don't

  • Avoid overwatering to prevent root rot ❌
  • Don’t expose to full sun in hot climates
  • Refrain from heavy fertilization in fall

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deadhead
Fertilize
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shaded woodland borderWinter-interest garden bed

Companion Plants

Ferns Hostas Astilbes Heucheras

Multiply

Propagation Methods

Good to Know

Common Questions

Green Giant Hellebore questions

What zones can Green Giant Hellebore grow in?

Green Giant Hellebore 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 Green Giant Hellebore deer resistant?

Yes — Green Giant Hellebore is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Green Giant Hellebore bloom?

Green Giant Hellebore typically blooms in late winter through late winter. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Green Giant Hellebore need full sun?

Green Giant Hellebore does best in part shade.

Keep exploring

Grow Green Giant Hellebore 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.