• 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

Leucojum vernum

spring snowflake

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
spring snowflake

© � RHS 2003

  • Other common names spring snowflake
    spring-flowered snowflake

    Agnes flower

    see more
  • Genus Leucojum are bulbous perennials with narrowly strap-shaped leaves and umbels of bell-shaped white, rarely pink flowers, each tepal often tipped with green

  • Family Amaryllidaceae / Amaryllidaceae

  • Details L. vernum is a bulbous perennial to 30cm in height, with strap-shaped glossy dark green leaves and erect stems with 1 or 2 broadly bell-shaped, green-tipped white flowers 2.5cm in width

  • Plant range C & E Europe

Characteristics

  • Foliage Deciduous

  • Habit Tufted

  • 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)
    Old hardiness ratings

    While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.

    • H1 - Requires heated glass
    • H2 - Requires unheated glass
    • H3 - Hardy outside in some regions of the UK
    • H4 - Hardy throughout the UK
    • H1 + H3 - Requires heated glass but may be grown outside in summer

    For full details of the hardiness ratings see

    see more

    H5

Colour

Sunlight

  • Full Sun

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

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Chalk

  • Chalk

    Clay

  • Chalk

    Sand

  • Chalk

    Loam

  • MoistureMoist but well-drained

  • SoilChalk, Clay, Sand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height

    0.1-0.5 metres

  • Ultimate spread

    0-0.1 metre

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Plant dry bulbs, 8 to 10cm deep, in autumn, in any moderately fertile, humus-rich, reliably moist soil in full sun

Propagation Propagate by seed, sown in autumn, in containers in a cold frame or separate offsets after the leaves have died down

Suggested planting locations and garden types Flower borders and beds Cottage & Informal Garden Rock Garden Wildflower meadow

How to care

Pruning No pruning required

Pests Susceptible to slugs and narcissus bulb fly

Diseases Generally disease free

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