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AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
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Other common names Bailey's Himalayan blue poppy
Synonyms Meconopsis betonicifolia
Family Papaveraceae
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
Details M.baileyi is a short-lived, clump-forming perennial to 1.2m in height, forming a rosette of hairy, oblong leaves. Erect leafy stems bear a succession of clear blue poppies 8-10cm in width with contrasting yellow stamens and a short style
Plant range SE Tibet
Foliage Deciduous
Habit Clump-forming
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H5
Partial Shade
Aspect West-facing or East-facing
Exposure Sheltered
Clay
Loam
MoistureMoist but well-drained
SoilClay, Loam
pHAcid, Neutral
Ultimate height 1-1.5 metres
Ultimate spread 0.1-0.5 metres
Time to ultimate height 2-5 years
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 seed or by division after flowering but can be short-lived
Suggested planting locations and garden types Flower borders and beds Underplanting of Roses and Shrubs Cottage & Informal Garden
Pruning Cut down to the base in late autumn
Pests May be attacked by slugs and snails
Diseases May be affected by a downy mildew
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