• 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

Tulipa biflora (15)

two-flowered tulip

  • Other common names two-flowered tulip

  • Synonyms Tulipa polychroma

  • Family Liliaceae

  • Genus Tulipa are bulbous perennials with characteristic flowers, in a wide range of colours, in spring

  • Horticultural Group Miscellaneous tulips include all species and hybrids not otherwise classified

  • Details T. biflora is a perennial bulb 10cm tall, producing one or two grey-green leaves, and fragrant, star-shaped flowers 4cm across, borne singly or in twos or threes from late winter. The white petals are golden-yellow at the base and flushed grey on the undersides

  • Plant range Europe, Asia, Africa

Characteristics

  • Foliage Deciduous

  • Habit Clump-forming

  • Fragrance Flower

  • 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)

    H5

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Sand

    Sand

  • Chalk

    Chalk

  • MoistureWell-drained

  • SoilLoam, Sand, Chalk

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height Up to 10 cm

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Needs a warm, sunny position with sharp drainage and protection from excessive wet, summer or winter. Best in a rock garden, raised bed or alpine house. See tulip cultivation

Propagation Propagate by lifting and separating offsets

Suggested planting locations and garden types Patio & Container Plants Gravel Garden Rock Garden City & Courtyard Gardens Cottage & Informal Garden

How to care

Pruning No pruning required

Pests Stem and bulb eelworm and slugs may be a problem

Diseases May be subject to tulip fire and bulb rots

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