• 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

Epimedium × youngianum 'Niveum'

snowy barrenwort

  • Other common names snowy barrenwort

  • Family Berberidaceae

  • Genus Epimedium are rhizomatous perennials with evergreen or deciduous, ternately or pinnately divided leaves, and open sprays of small, bowl-shaped flowers, often with prominent spurs, in mid to late spring

  • Details 'Niveum' is a compact herbaceous perennial to 25cm in height, with deciduous leaves composed of 9 leaflets, bronze when young. Pure white flowers 15mm in width are borne in open sprays

Characteristics

  • Foliage Deciduous

  • Habit Clump-forming

  • 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 West-facing or East-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Clay

    Clay

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilSand, Clay, Loam

  • pHAcid, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in fertile, moist but well-drained, humus-rich soil in partial shade; shelter from cold, dry winds

Propagation Propagate by division in autumn or after flowering

Suggested planting locations and garden types Flower borders and beds Low Maintenance Underplanting of Roses and Shrubs Garden Edging Cottage & Informal Garden

How to care

Pruning Cut back old foliage in late winter or early spring for the best display of new foliage and flowers

Pests May be attacked by vine weevil

Diseases May be subject to a virus

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