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Herbaceous Perennial
Polemonium caeruleum subsp. caeruleum f. album
Jacob's ladder white form
A vigorous upright perennial to 75cm tall, with light green, pinnate leaves and pure white flowers with yellow anthers
Other common names
Jacob's ladderSynonyms
Polemonium caeruleum subsp. amygdalinum 'Album'Polemonium caeruleum subf. album
see morePolemonium caeruleum var. lacteum
Polemonium caeruleum subsp. nipponicum f. album
Polemonium caeruleum var. album
Polemonium caeruleum subsp. caeruleum f. albiflorum
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Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | White | Green | ||
Autumn | ||||
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
- Yes
- Foliage
- Deciduous
- Habit
- Bushy
- 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
Correct
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
- Wildlife gardens
- Wildflower meadow
- Flower borders and beds
Pruning
Cut back to the base in autumn
Pests
Generally pest-free
Diseases
May be susceptible to powdery mildews
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