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Herbaceous Perennial

Polemonium yezoense var. hidakanum Bressingham Purple ('Polbress')

Hokkaido Jacob's ladder [Bressingham Purple]

A herbaceous perennial with foliage that is purple-tinged in spring and autumn. It bears clusters of sky blue flowers, marked in a darker blue with a small white centre. These are cupped in shape and are held in clusters from late spring to midsummer

Synonyms
Polemonium yezoense var. hidakanum 'Polbress'
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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
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Green Purple
Summer Blue Green
Autumn Green Purple
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Polemoniaceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright
Genus

Polemonium can be annuals or herbaceous perennials or upright or spreading habit, with pinnate leaves and usually clustered, tubular, bell, or funnel-shaped flowers

Name status

Trade

How to grow

Cultivation

Grow in any fertile, moist but well-drained soil preferably in full sun or partial shade

Propagation

Propagate by division in spring

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

Deadhead flowered stems so as to prevent self-seeding

Pests

Generally pest-free

Diseases

Generally disease-free, but may be susceptible to powdery mildews

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