Anagallis monellii

RHS Plant Profile
blue pimpernel

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blue pimpernel RHS 1972
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Herbaceous Perennial Annual Biennial

A low-growing perennial with trailing stems bearing dark green ovate leaves, and deep blue, bowl-shaped flowers from early summer to autumn. Often grown as an annual

Position

Full sun

Soil Types

Loam, Sand

Max Height

Up to 10 cm

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
Up to 10 cm

Growing Conditions

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

Position

Full sun
Aspect
South–facing or East–facing
Exposure
Exposed or 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
Primulaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Trailing
Genus
Anagallis can be annuals or evergreen perennials of creeping habit, with small leaves and solitary, 5-petalled, saucer-shaped flowers
Name Status
Correct
Plant Range
Mediterranean

How to Grow

Cultivation

Grow in moderately fertile, well-drained soil in full sun

Propagation

Propagate by seed sown in spring

Suggested planting locations and garden types

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

Pruning

Cut back after flowering

Pests

May be susceptible to aphids

Diseases

Generally disease-free