Hosta sieboldiana var. elegans (giant blue hosta) — Clump-forming, mounded

Overview

Hosta sieboldiana var. elegans is a clump-forming, mounded perennial in the genus Hosta, part of the Asparagaceae family, with deciduous; broad, ribbed or puckered, often variegated or glaucous foliage. It typically grows around 1.0 m tall. Hosta sieboldiana var. elegans grows best in partial to full shade; blue-leaved kinds hold their colour best out of sun, and tolerates fertile loam enriched with organic matter soils and neutral to slightly acid pH. Its UK hardiness is rated H7. Suggested uses include shade gardens, borders, ground cover and container planting. It is native to Japan.

About

Hosta sieboldiana var. elegans is a clump-forming perennial prized for its large, blue-green, puckered leaves that form a substantial mounded habit. It reaches around 1.0 m and dies back each winter as a deciduous hosta. The foliage may be glaucous or occasionally variegated, and blue-leaved selections keep their tone best out of direct sun. Flowering occurs in June to August on upright scapes.

Wikipedia contributors, CC BY-SA 4.0 — Hosta sieboldiana

About the genus

Hosta is a genus of plants commonly known as hostas, plantain lilies and occasionally by the Japanese name gibōshi. Hostas are widely cultivated as shade-tolerant foliage plants. The genus is placed in the family Asparagaceae, subfamily Agavoideae, and is native to northeast Asia.

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

In the garden

Hosta sieboldiana var. elegans is a perennial from Japan grown primarily for its foliage rather than its flowers. Plants form a mounded clump of broad, ribbed or puckered leaves that can be glaucous or variegated; the species is commonly treated as a large shade hosta and will reach about 1.0 m across and tall in time. Flower scapes appear in June to August. Choose a sheltered, north- or east-facing site in partial to full shade and avoid strong afternoon sun, which can bleach the blue tones; blue-leaved kinds hold their colour best out of sun. Give it fertile loam rich in organic matter, a neutral to slightly acid pH and reliably moist conditions — soil should be kept damp but never waterlogged. It is fully hardy in UK terms (H7) and also suits USDA zones 3–9. Use this variety where a bold foliage statement is needed: under trees in a shaded border, as low ground cover where its 1.0 m mounds can fill space, or in large containers sited out of direct sun. Expect the broad, puckered leaves to form a dominant mound and for flower stems to rise above the foliage between June and August.

Growing conditions

Best soil and position for Hosta

Sunlight: Partial to full shade; blue-leaved kinds hold their colour best out of sun
Soil type: Fertile loam enriched with organic matter
Soil pH: Neutral to slightly acid
Soil moisture: Reliably moist but never waterlogged
Aspect: North or east facing
Exposure: Sheltered
UK hardiness: H7

Plant details

Hosta sieboldiana var. elegans size, habit and characteristics

Plant type: Perennial
Habit: Clump-forming, mounded
Foliage: Deciduous; broad, ribbed or puckered, often variegated or glaucous
Height: 1.0 m
Suggested uses: Shade gardens, borders, ground cover, container planting
Native to: Japan

Care notes

Pruning and caring for Hosta sieboldiana var. elegans

Cultivation: Give a cool root run, generous leaf mould and consistent moisture — drought is what produces thin, scorched leaves. Growing in containers makes slug control far easier, and a top-dressing of grit or a copper band around the pot helps further.
Pruning: No pruning needed. Remove flower scapes once faded if seed is not wanted, and clear collapsed foliage in late autumn to take away slug shelter.
Propagation: Divide crowns in early spring as the shoots emerge, cutting between the buds with a sharp knife. Division is the only way to keep a named cultivar true.
Pest resistance: Highly attractive to slugs and snails, which is the one real limiting factor; vine weevil can be serious in containers.
Disease resistance: Generally healthy. Hosta virus X is the notable exception — affected plants should be destroyed rather than divided.

Frequently asked questions

How do I grow Hosta sieboldiana var. elegans?

Give a cool root run, generous leaf mould and consistent moisture — drought is what produces thin, scorched leaves. Growing in containers makes slug control far easier, and a top-dressing of grit or a copper band around the pot helps further.

Where is the best place to plant Hosta sieboldiana var. elegans?

Hosta sieboldiana var. elegans prefers partial to full shade; blue-leaved kinds hold their colour best out of sun. It suits sheltered positions.

What soil does Hosta sieboldiana var. elegans need?

Hosta sieboldiana var. elegans grows best in fertile loam enriched with organic matter soil. It prefers neutral to slightly acid soil. Aim for soil that stays reliably moist but never waterlogged.

How do I prune Hosta sieboldiana var. elegans?

No pruning needed. Remove flower scapes once faded if seed is not wanted, and clear collapsed foliage in late autumn to take away slug shelter.

How big does Hosta sieboldiana var. elegans grow?

Hosta sieboldiana var. elegans reaches a height of 1.0 m.

Is Hosta sieboldiana var. elegans hardy in the UK?

Hosta sieboldiana var. elegans has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.

How do I propagate Hosta sieboldiana var. elegans?

Divide crowns in early spring as the shoots emerge, cutting between the buds with a sharp knife. Division is the only way to keep a named cultivar true.

More in the Hosta genus

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