• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Cardiocrinum giganteum

giant Himalayan lily

giant Himalayan lily

© RHS 2002

  • Other common names giant Himalayan lily
    giant lily

  • Synonyms Lilium giganteum himalaicum

  • Family Liliaceae

  • Genus Cardiocrinum are large bulbous perennials with heart-shaped leaves and trumpet-shaped flowers resembling lilies, folowed by erect oblong seed capsules. Monocarpic, the bulbs dying after flowering

  • Details C. giganteum is a perennial to 2m in height, with leaves to 30cm across, and terminal racemes of fragrant, trumpet-shaped white flowers marked with purple within the mouth

  • Plant range SC Asia

Characteristics

  • Foliage Deciduous

  • Habit Columnar/Upright

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)

    H5

Colour

Sunlight

  • Partial Shade

  • Aspect South-facing or North-facing or West-facing or East-facing

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Sand

    Sand

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilChalk, Clay, Sand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in moist but well-drained, deep, humus-rich, fertile soil. Intolerant of waterlogging and may need some protection from frosts in colder areas. Mulch and feed regularly. Intolerant of hot or dry sites. Dried seed heads can be used in flower arrangements

Propagation Propagate by seed, sowing in deep pans with bottom heat, or from offsets after flowering. May take up to 7 years to flower

Suggested planting locations and garden types Underplanting of Roses and Shrubs Cottage & Informal Garden Architectural

How to care

Pruning No pruning required

Pests May be damaged by slugs

Diseases May be affected by a virus

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