Trachymene coerulea

RHS Plant Profile
blue lace flower

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blue lace flower RHS

Other common names

lavender lace flower, Queen Anne's blue lace, lace plant

Synonyms

Didiscus 'Blue Lace'
Didiscus caeruleus

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Annual Biennial Conservatory Greenhouse
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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

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
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 & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Araliaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Trachymene are annuals, biennials or perennials with terminal umbels of very small, star-shaped, white, pink or blue flowers
Name Status
Correct
Plant Range
W & SW Australia

How to Grow

Cultivation

Grow as an annual in a sunny position in well-drained soil, or grow under glass in peat-free, 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

  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free