Amsonia tabernaemontana 'Storm Cloud'
A herbaceous perennial forming a mound of simple stems of a distinctly dark colour. They bear slightly blue-green leaves which turn yellow in autumn. The flower buds are steely-blue and open to clusters of five-petalled blue stars in late spring to early summer
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Blue | Green | ||
|---|---|---|---|---|
| Summer | Blue | Green | ||
| Autumn | Yellow | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Apocynaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Potentially harmful
- Harmful if eaten. Wear gloves and other protective equipment when handling Pets (dogs, cats): Harmful if eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
- Genus
Amsonia are clump-forming perennials with milky sap, lance-shaped leaves and terminal panicles of small, starry blue flowers in spring and summer
- Name status
Accepted
How to grow
Cultivation
Grow in moist but well-drained soil in full sun, although it can tolerate partial shade and is fairly drought-tolerant
Propagation
Propagate by division in spring or by softwood cuttings in early summer
Suggested planting locations and garden types
- Cottage and informal garden
- Prairie planting
- Cut flowers
- Flower borders and beds
Pruning
Cut back in early winter
Pests
Generally pest-free
Diseases
Generally disease-free
Get involved
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