Helleborus atrorubens of gardens (Christmas Rose) — Clump-forming, mounded

Overview

Helleborus atrorubens of gardens is a clump-forming, mounded perennial in the genus Helleborus, part of the Ranunculaceae family, with evergreen or semi-evergreen; leathery, palmately divided, dark green foliage. Helleborus atrorubens of gardens grows best in partial shade; tolerates full sun in reliably moist soil, and tolerates fertile heavy loam or clay with plenty of humus soils and neutral to alkaline pH. Its UK hardiness is rated H6-H7. Suggested uses include shade garden, woodland garden and underplanting for deciduous shrubs. It is native to Alps of Austria, Italy and Slovenia.

About

Helleborus atrorubens of gardens is a clump-forming, mounded perennial in the Ranunculaceae that flowers in winter and early spring from January to April. It has leathery, palmately divided dark green leaves that are evergreen or semi-evergreen. Best sited in partial shade, it will also tolerate full sun where soil remains reliably moist. The plant is toxic if ingested and can cause skin irritation, so handle with care.

Wikipedia contributors, CC BY-SA 4.0 — Helleborus atrorubens

About the genus

Commonly known as hellebores, the Eurasian genus Helleborus consists of approximately 20 species of herbaceous or evergreen perennial flowering plants in the family Ranunculaceae, within which it gave its name to the tribe of Helleboreae. Many hellebore species are poisonous.

Wikipedia contributors, "Hellebore", CC BY-SA 4.0 — Hellebore

In the garden

A member of the Ranunculaceae, Helleborus atrorubens of gardens originates from the Alps of Austria, Italy and Slovenia and brings early-season blooms to temperate borders. Flowers appear between January and April, offering interest when many other perennials are dormant. The plant forms a steady, mounded clump with leathery, palmately divided leaves that persist through much of the year. Position in partial shade on fertile heavy loam or clay enriched with plenty of humus; the soil should be moist but well drained. It prefers neutral to alkaline conditions and does best on north, east or west-facing aspects in a sheltered spot. Although typically grown in shade, it will tolerate full sun if the soil remains reliably moist. In UK hardiness terms H6–H7 indicates it is very hardy to fully hardy. Use Helleborus atrorubens of gardens in shade or woodland planting and as an underplanting for deciduous shrubs where its winter-spring flowers can be appreciated beneath bare branches. Keep in mind the plant is toxic if eaten and can cause skin irritation; wear gloves when handling or removing old leaves to avoid contact with the sap.

Growing conditions

Best soil and position for Helleborus

Sunlight: Partial shade; tolerates full sun in reliably moist soil
Soil type: Fertile heavy loam or clay with plenty of humus
Soil pH: Neutral to alkaline
Soil moisture: Moist but well drained
Aspect: North, east or west facing
Exposure: Sheltered
UK hardiness: H6-H7

Plant details

Helleborus atrorubens of gardens size, habit and characteristics

Plant type: Perennial
Habit: Clump-forming, mounded
Foliage: Evergreen or semi-evergreen; leathery, palmately divided, dark green
Suggested uses: Shade garden, woodland garden, underplanting for deciduous shrubs
Native to: Alps of Austria, Italy, Slovenia
Toxicity: Toxic if ingested, can cause skin irritation

Care notes

Pruning and caring for Helleborus atrorubens of gardens

Cultivation: Give them a cool, humus-rich root run under deciduous shrubs, where they get spring light and summer shade. They dislike being moved, so plant well and then leave alone. The single most useful job is removing the old leaves of the hybrid hellebores in midwinter: it exposes flowers that would otherwise be hidden, and strips out the foliage that carries leaf spot.
Pruning: Cut away the previous season's leaves of stemless kinds as the flower buds emerge in midwinter. On stemmed species such as H. foetidus and H. argutifolius, remove flowered stems at the base once they fade.
Propagation: Divide established clumps after flowering, though they re-establish slowly. Seed sown fresh germinates readily and self-sown seedlings are plentiful, but hybrids will vary from the parent.
Pest resistance: Slugs and snails damage emerging buds, and aphids gather on flower stems in spring.
Disease resistance: Hellebore leaf spot is common and disfiguring, and removing old foliage in winter is the main control. Hellebore black death, a virus, causes distorted blackened growth and affected plants must be destroyed.

Frequently asked questions

How do I grow Helleborus atrorubens of gardens?

Give them a cool, humus-rich root run under deciduous shrubs, where they get spring light and summer shade. They dislike being moved, so plant well and then leave alone. The single most useful job is removing the old leaves of the hybrid hellebores in midwinter: it exposes flowers that would otherwise be hidden, and strips out the foliage that carries leaf spot.

Where is the best place to plant Helleborus atrorubens of gardens?

Helleborus atrorubens of gardens prefers partial shade; tolerates full sun in reliably moist soil. It suits sheltered positions.

What soil does Helleborus atrorubens of gardens need?

Helleborus atrorubens of gardens grows best in fertile heavy loam or clay with plenty of humus soil. It prefers neutral to alkaline soil. Aim for soil that stays moist but well drained.

How do I prune Helleborus atrorubens of gardens?

Cut away the previous season's leaves of stemless kinds as the flower buds emerge in midwinter. On stemmed species such as H. foetidus and H. argutifolius, remove flowered stems at the base once they fade.

Is Helleborus atrorubens of gardens hardy in the UK?

Helleborus atrorubens of gardens has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.

How do I propagate Helleborus atrorubens of gardens?

Divide established clumps after flowering, though they re-establish slowly. Seed sown fresh germinates readily and self-sown seedlings are plentiful, but hybrids will vary from the parent.

Is Helleborus atrorubens of gardens toxic?

Toxic if ingested, can cause skin irritation.

More in the Helleborus genus

Browse all Helleborus →