Veronica austriaca subsp. teucrium 'Crater Lake Blue'
saw-leaved speedwell 'Crater Lake Blue'
'Crater Lake Blue' is an herbaceous perennial forming a mound to 25cm in height, with toothed, oblong leaves and axillary racemes of intense pure blue flowers 12mm width
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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–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Blue | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
West–facing or South–facing or East–facing
Exposure
ShelteredDrought resistance
Yes Hardiness
H6Botanical details
- Family
- Plantaginaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Genus
Veronica can be annuals, perennials or sub-shrubs with paired leaves and small flowers usually in terminal or axillary racemes or spikes
- Name status
Accepted
How to grow
Cultivation
Grow in loamy, moderately fertile, moist but well-drained soil in full sun or partial shade
Propagation
Propagate by division in autumn or spring
Suggested planting locations and garden types
- Patio and container plants
- Rock garden
- City and courtyard gardens
- Coastal
- Cottage and informal garden
- Banks and slopes
- Garden edging
- Flower borders and beds
Pruning
Remove spent flowers to encourage compact habit and good flowering in the following year
Pests
May be susceptible to aphids
Diseases
May be susceptible to downy mildews, fungal leaf spot, fungal rot, Phytophthora and sometimes honey fungus
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