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Herbaceous Perennial
Pasithea caerulea
blue pasithea
A semi-evergreen perennial, to 80cm high in flower, with narrow, strappy green leaves. In early summer, star-shaped deep blue flowers are borne on tall, slender branching stems
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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
Loam
Sand
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | Blue | Green | ||
Autumn | Green | |||
Winter | Green |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or ShelteredDrought resistance
Yes Hardiness
H5Botanical details
- Family
- Asphodelaceae
- Native to the UK
- No
- Foliage
- Semi evergreen
- Habit
- Clump forming
- Name status
Correct
How to grow
Cultivation
Thrives in fertile, free draining soil in full sun or light shade
Propagation
Propagate by seed
Suggested planting locations and garden types
- Gravel garden
- Banks and slopes
- Cut flowers
- Wall side borders
Pruning
No pruning required
Pests
Generally pest-free
Diseases
Generally disease-free
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