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Hosta sieboldiana var. elegans AGM

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© RHS 2001

Characteristics

Plant type

Herbaceous Perennial

Habit

Clump-forming

Resilience

Hardiness

H7 (very hardy)

Colour

Flower

White and Pale Purple in Summer

Foliage

Blue and Grey/Silver in Autumn, Spring and Summer

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

giant blue hosta

Family

Asparagaceae


Hosta are clump-forming herbaceous perennials with simple, ovate or lance-shaped leaves, often attractively coloured or variegated, and erect racemes of nodding, funnel or bell-shaped flowers in early summer

H. sieboldiana var. elegans is a perennial forming a large clump of puckered, broad, blue-grey leaves to 20-30cm in length. Lilac-tinged white, bell-shaped flowers in dense racemes on stems to 75cm

Other common names

  • short-cluster plantain lily

Synonym(s)

  • Hosta glauca
  • Hosta 'Blue Angel' misapplied
  • Hosta 'Elegans'
  • Hosta 'Robusta' (fortunei)

How to grow

Sunlight

  • Part shade

Aspect

  • East-facing, West-facing or North-facing
  • Sheltered

Cultivation

Grow in fertile, moist but well-drained soil with shelter from cold, dry winds. Best in slightly acid or neutral soils, it will grow in alkaline soils if enriched but shallow, chalky soils can cause leaves to yellow. Partial shade is best but it can tolerate some sun if the soil is kept moist. Mulch in spring

Soil

  • Moist but well-drained
  • Acid or Neutral
  • Loam or Clay

Propagation

Propagate by division in late summer or early spring

Suggested planting locations and garden types

Cottage/Informal Garden, Flower borders and beds, Cut Flowers, Ground Cover, Underplanting of Roses and Shrubs, City/Courtyard Gardens or Patio/Container Plants


How to care

Pruning

Remove spent foliage as required and clear up dead foliage when it dies back at the end of the growing season

Pests

Prone to slugs and snails; plants in pots can get vine weevil

Diseases

Generally disease free