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Herbaceous Perennial

Meconopsis (George Sherriff Group) 'Dalemain'

Himalayan blue poppy 'Dalemain'

'Dalemain' is a short-lived perennial about 1m tall, forming an upright rosette of long, oval, hairy leaves suffused with red-purple when young. In summer, erect, leafy stems bear a cluster of deep blue poppies, sometimes suffused with mauve or purple tones with contrasting yellow stamens. The seed capsules, covered in bristly hairs, are decorative but contain no viable seed

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Clay
Loam
Moisture
Moist but well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Purple Green
Summer Blue Green Green
Autumn Green
Winter
Position
  • Partial shade
Aspect

West–facing or East–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Papaveraceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Columnar upright
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

Only suitable for particular sites: the soil needs to be neutral to slightly acid, moist but well-drained and enriched with leaf mould or humus to prevent stagnation; in a partially shaded site with shelter from cold, dry winds. Thrives in areas with cool damp summers

Propagation

Propagate by division after flowering, but can be short lived

Suggested planting locations and garden types
  • Cottage and informal garden
  • Flower borders and beds
Pruning

Cut down to the base in late autumn

Pests

May be susceptible to slugs and snails

Diseases

May be affected by a downy mildew

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