Diascia 'Frilly'

RHS Plant Profile
twinspur 'Frilly'

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Herbaceous Perennial

A spreading perennial with strong pink flowers 2cm across, borne in terminal racemes in summer

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
West–facing or South–facing or East–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)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Scrophulariaceae
Native to GB/Ireland
No
Foliage
Semi evergreen
Habit
Matforming
Genus
Diascia can be annuals or semi-evergreen perennials, usually making a mat of neat foliage with racemes of cup or bell-shaped flowers, usually in shades of pink, and each with two short spurs
Name Status
Unresolved

How to Grow

Cultivation

Grow in fertile, moist but well-drained soil in full sun. Young plants should be overwintered indoors and watered sparingly

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

  • Rock garden
  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Flower borders and beds
  • Garden edging

Pruning

Deadhead regularly. Trim back plants to overwinter them

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free