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Herbaceous Perennial

Polemonium yezoense 'Kaleidoscope' (v)

Jacob's ladder 'Kaleidoscope'

A clump-forming perennial to around 70cm tall with variegated, divided leaves; lance-shaped leaflets emerge with purple-pink edges that fade to creamy-yellow. Dark, upright stems bear clusters of blue-purple flowers from late spring into summer

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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 Purple Pink Purple Green
Summer Blue Purple Pink Purple Green Cream Yellow
Autumn Green Cream Yellow
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 GB / Ireland
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

Accepted

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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