Polemonium caeruleum Brise d'Anjou ('Blanjou'PBR) (v)
Jacob's ladder [Brise d'Anjou]
A clump-forming perennial to 90cm tall, with ladder-like, pinnate mid-green leaves composed of leaflets edged creamy-yellow, fading to white in shade, and bearing sprays of blue flowers 2.5cm wide with prominent yellow stamens in early summer
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Variegated Cream | |||
|---|---|---|---|---|
| Summer | Blue | Green Variegated Cream | ||
| Autumn | Green Variegated Cream | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Polemoniaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- 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
- City and courtyard gardens
- Coastal
- Cottage and informal garden
- Patio and container plants
- Wildlife gardens
- Flower borders and beds
Pruning
Cut back to the base in autumn
Pests
Generally pest-free
Diseases
May be susceptible to powdery mildews
Get involved
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