• AGM plants

    AGM plants have been through a rigourous 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

Scilla siberica

Siberian squill

AGM plants

AGM plants have been through a rigourous 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
Siberian squill

© � RHS 2002

  • Other common names Siberian squill

  • Genus Scilla are perennial bulbs with narrow basal leaves and erect stems bearing racemes of star-shaped, flat or bell-shaped flowers which are often blue

  • Family Asparagaceae / Asparagaceae

  • Species S. siberica is a bulbous perennial to 20cm in height, with narrow strap-shaped leaves and purplish stems bearing short racemes with 2-5 nodding, bowl-shaped bright blue flowers 1.5cm in width

  • Plant range Krym to NW Iran

Characteristics

  • Foliage Deciduous

  • Habit Clump-forming

  • Toxicity Ingestion may cause severe discomfort

  • 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

  • Partial Shade

  • Aspect South-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Loam

  • Chalk

    Sand

  • Chalk

    Chalk

  • MoistureWell-drained

  • SoilLoam, Sand, Chalk

  • 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 bulbs 8-10cm deep in late summer or early autumn in a moderately fertile, humus-rich, well-drained soil in full sun or partial shade

Propagation Propagate by seed or divide offsets when dormant

Suggested planting locations and garden types Flower borders and beds Garden Edging Underplanting of Roses and Shrubs City & Courtyard Gardens Cottage & Informal Garden Gravel Garden Patio & Container Plants Rock Garden

How to care

Pruning No pruning required

Pests Generally pest free

Diseases May be subject to a virus

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