Oreomecon nudicaulis Spring Fever Series

RHS Plant Profile
Icelandic poppy Spring Fever Series

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Synonyms

Papaver nudicaule Spring Fever Series

Herbaceous Perennial Annual Biennial

A collection of biennial or short-lived perennial poppies, to 35cm high, with finely divided, grey-green leaves. Flowers from spring into summer depending on sowing time, producing brightly coloured flowers with crinkled, slightly glossy petals, in shades of red, orange, yellow, pink and white

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
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full sun
Aspect
West–facing or South–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)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Papaveraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
A relatively new genus of perennial alpine poppy with long, hairy, leafless stems and solitary red, white, yellow or orange flowers
Name Status
Accepted

How to Grow

Cultivation

Grow in full sun in a well-drained soil; thrives in cool climates

Propagation

Propagate by seed, sowing in autumn for flowers the following spring, or sow under cover in late winter and transplant for flowers in summer

Suggested planting locations and garden types

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

Pruning

Deadhead to prolong flowering

Pests

May be susceptible to aphids

Diseases

May be susceptible to downy mildews, powdery mildews, fungal wilts and verticillium wilt