Meconopsis 'Mildred'

RHS Plant Profile
Himalayan blue poppy 'Mildred'

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Herbaceous Perennial
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A clump-forming perennial to around 1.5m in height, with rosettes of lance-shaped, pale green foliage which emerges early in the season, initially covered in brown hairs which become less noticable as the foliage matures. Stiff, upright stems of intense blue flowers with yellow stamens appear in the spring. Ideal for shadier locations in the garden

Position

Partial shade

Soil Types

Clay, Loam

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
1-1.5 metres

Growing Conditions

Clay Loam
Moisture
Moist but well–drained
pH
Acid or Neutral

Position

Partial shade
Aspect
East–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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Papaveraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Meconopsis can be annuals, biennials, evergreen or herbaceous perennials, often monocarpic, with rosettes of hairy leaves and bowl-shaped flowers that may be solitary on a leafless stem, or in racemes or panicles on a leafy stem
Name Status
Accepted

How to Grow

Cultivation

Grow in dappled shade in humus rich, slightly acidic soil with good drainage and protection from drying winds. Thrives in areas with cool damp summers; best planted in soil that does not dry out in summer or get waterlogged in winter

Propagation

Propagate by division; this cultivar does not produce viable seed

Suggested planting locations and garden types

  • Cottage and informal garden
  • Flower borders and beds

Pruning

Cut back spent flower stems

Pests

May be susceptible to slugs, snails and aphids

Diseases

May be susceptible to downy mildews