Veronicastrum sibiricum
An erect, clump-forming, rhizomatous perennial to 1.5m, with broadly linear leaves arranged in whorls around the stems. In summer it bears erect, slender spikes of purple flowers
Size
Ultimate height
1–1.5 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 | Green | |||
|---|---|---|---|---|
| Summer | Purple | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered Hardiness
H7Botanical details
- Family
- Plantaginaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Genus
Veronicastrum are tall herbaceous perennials with erect stems bearing narrow leaves in whorls, and long terminal racemes of small flowers in summer
- Name status
Correct
- Plant range
- Russia to Korea
How to grow
Cultivation
Grow in moderately fertile, humus-rich, moist soil in sun or partial shade
Propagation
Propagate by by sowing seed in pots in a cold frame in autumn, or by division in spring
Suggested planting locations and garden types
- Cottage and informal garden
- Flower borders and beds
Pruning
Cut back old stems in early spring
Pests
May be susceptible to aphids
Diseases
May be susceptible to leaf spot, downy mildews and Powdery mildews
Get involved
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