Polemonium viscosum
sticky Jacob's ladder
A compact herbaceous perennial to 30cm tall with sticky, pinnate leaves up to 15cm long made up of many spoon-shaped leaflets and blue-purple flowers borne in late spring and early summer
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Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Blue Purple | Green | ||
|---|---|---|---|---|
| Summer | Blue Purple | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Polemoniaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Matforming
- 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
- Plant range
- Canada to USA
How to grow
Cultivation
Grow in any moist but well-drained soil in full sun or partial shade
Propagation
Propagate by seed or by division
Suggested planting locations and garden types
- Rock garden
- Gravel garden
- Patio and container plants
Pruning
No pruning required
Pests
Generally pest-free
Diseases
Generally disease-free but may be affected by powdery mildews
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