• 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

Trachymene coerulea

blue lace flower

  • Other common names blue lace flower
    lace plant

    lavender lace flower
    Queen Anne's blue lace

    see more
  • Synonyms Didiscus 'Blue Lace'
    Didiscus caeruleus

  • Family Apiaceae

  • Genus Trachymene are annuals, biennials or perennials with terminal umbels of very small, star-shaped, white, pink or blue flowers

  • Details T. coerulea is a stiff-stemmed annual or biennial, to 60cm tall, with pale green foliage and lightly-scented, lavender-blue, lacy flowerheads, up to 5cm across, produced on long stems in summer

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Flower

  • 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)

    H2

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Loam

    Loam

  • Sand

    Sand

  • MoistureWell-drained

  • SoilChalk, Loam, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 1-2 years

How to grow

Cultivation Grow as an annual in a sunny position in well-drained soil, or grow under glass in loam-based potting compost. Provides long-lasting cut flowers

Propagation Sow seed under glass in mid spring, or in situ in late spring. Germination is slow

Suggested planting locations and garden types Cut Flowers Flower borders and beds City & Courtyard Gardens Cottage & Informal Garden Patio & Container Plants

How to care

Pruning No pruning needed

Pests Generally trouble free

Diseases Generally trouble free

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