• 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

Ornithogalum dubium

Star of Bethlehem

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
Star of Bethlehem

© � RHS

  • Other common names Star of Bethlehem
    Orange star flower

    Yellow chinkerinchee
    Geeltjienkerientjee

    see more
  • Genus Ornithogalum are bulbous perennials with linear or strap-shaped basal leaves and racemes, sometimes contracted, of star-shaped or cup-shaped, white, yellow or orange flowers

  • Family Asparagaceae / Asparagaceae

  • Species O. dubium is a bulbous perennial to 30cm tall, with narrowly lance-shaped leaves and dense racemes of showy orange or yellow flowers 2.5cm across, sometimes with a dark centre, in winter and spring

  • Plant range S Africa

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Toxicity All parts may cause severe discomfort if ingested and the sap may irritate skin

  • 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

    H2

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Sand

  • Chalk

    Loam

  • MoistureWell-drained

  • SoilSand, Loam

  • pHNeutral

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 in spring, water well when in growth. Lift and overwinter frost free place. Alternatively grow in containers in soil based compost such as John Innes No. 2., keep dry when dormant and re-pot in spring

Propagation Propagate by seed as soon as ripe in the autumn or sow in spring. Remove offsets when dormant. Further bulb propagation advice

Suggested planting locations and garden types Patio & Container Plants

How to care

Pruning Trim off dead foliage

Pests Generally trouble free

Diseases Generally trouble free

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