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Stinking Hellebore (Helleborus foetidus)

Stinking Hellebore (Helleborus foetidus) is an evergreen perennial with dark green, deeply divided leaves. It blooms with pale green, bell-shaped flowers from late winter

Above information is sourced from Wikipedia

Sunlight

Partial to full shade

Watering

Moderate, consistent moisture

Soil

Fertile, well-drained, humus-rich, neutral to alkaline

Temperature

Cool temperatures preferred

Habitat

Outdoor

Fertilizer

Low to moderate, annual top-dressing

Care Requirements

Light

Partial to full shade

Water

Moderate, consistent moisture

Soil

Fertile, well-drained, humus-rich, neutral to alkaline

Temperature

Cool temperatures preferred

Habitat

Outdoor

Fertilizer

Low to moderate, annual top-dressing

Plant Overview

Plant Type

Herb

Plant Category

Ornamental

Plant Place Type

Ground, Garden, Groundcover

Plant Environment

Outdoor

Lifespan

Perennials

Plant Height

0.3-0.8 m

Spread

0.3-0.6 m

Growth Rate

Medium

Dormancy

Evergreen

Leaf Color

Dark Green

Leaf Type

Palmate

Flower Size

2-3 cm

Optimal Sunlight Lux

4000

Image Gallery

Flowering & Fruiting Cycles

Monthly activity intensity for bloom and fruit across both hemispheres.

Northern hemisphere

Flowering & fruiting calendar

Peak bloom · MarPeak fruit · Jun
FloweringFruiting
02468JanFebMarAprMayJunJulAugSepOctNovDecActivity intensityMonths76
Southern hemisphere

Flowering & fruiting calendar

Peak bloom · NovPeak fruit · Jul
FloweringFruiting
02468JanFebMarAprMayJunJulAugSepOctNovDecActivity intensityMonths55
Synonyms
Helleboraster foetidus (L.) Moench
Helleborus beugesiacus Jord. & Fourr.
Helleborus deflexifolius Jord. & Fourr.
Helleborus jourdanii Pages
Helleborus nemoralis Jord. & Fourr.
Helleborus rhodanicus Jord. & Fourr.
Taxonomy
  • kingdomPlantae
  • divisionTracheophyta
  • classMagnoliopsida
  • orderRanunculales
  • familyRanunculaceae
  • genusHelleborus
  • speciesHelleborus foetidus
Toxicity

Toxic for humans

Yes

Rating: 9/5

Toxic for pets

Yes

Rating: 9/5

Edible

No

All parts of Helleborus foetidus are toxic if ingested, containing cardiotoxic bufadienolides and protoanemonin. Ingestion can cause severe gastrointestinal upset, cardiac issues, and neurological symptoms. Skin contact may also cause irritation.

Additional Care Tips

Helleborus foetidus prefers consistently moist, but not waterlogged, soil. Water regularly during dry spells, especially in its first year after planting, to establish a strong root system. Reduce watering once established, as it tolerates some drought, but avoid prolonged dryness which can stress the plant. Ensure good drainage to prevent root rot.

Minimal pruning is required for Stinking Hellebore. Remove any damaged, diseased, or yellowing leaves at the base of the plant to maintain a tidy appearance and improve air circulation. Spent flower stalks can be cut back after flowering if self-seeding is not desired, otherwise, leave them to mature seeds.

Helleborus foetidus can be propagated by seed, which often self-sows readily around the parent plant. Collect seeds when ripe and sow immediately, as they require a period of cold stratification to germinate. Division of mature clumps is generally not recommended as hellebores resent root disturbance.

Helleborus foetidus is best grown in the ground and does not typically require repotting as it resents root disturbance. If grown in a container, choose a large pot to accommodate its mature size and only repot when absolutely necessary, carefully transferring the entire root ball to a slightly larger container with minimal disruption.

FAQs

Why is it called "Stinking Hellebore"?

The common name 'Stinking Hellebore' refers to the mild, somewhat unpleasant odor emitted when the plant's foliage is crushed or bruised. The flowers themselves are not typically strongly scented.

Is Helleborus foetidus truly evergreen?

Yes, Helleborus foetidus is an evergreen perennial, meaning it retains its dark green, deeply divided leaves throughout the year, providing continuous interest in the garden, especially during winter.

What are the ideal growing conditions for Stinking Hellebore?

Stinking Hellebore thrives in partial to full shade with fertile, well-drained, humus-rich soil that is neutral to alkaline. It prefers cool temperatures and consistent moisture, especially during dry periods.

How do I propagate Helleborus foetidus?

The most common and effective method is by seed. Helleborus foetidus often self-sows readily. Seeds should be collected when ripe and sown immediately, as they require a period of cold stratification for germination. Division is generally not recommended due to root disturbance.

Is Helleborus foetidus poisonous?

Yes, all parts of Helleborus foetidus are considered poisonous if ingested. They contain toxic compounds that can cause severe gastrointestinal upset, cardiac issues, and neurological symptoms in humans and pets. Skin contact can also cause irritation.