Commelina tuberosa Coelestis Group
dayflower Coelestis Group
Coelestis Group are tuberous perennials which form a spreading clump of erect leafy stems, with vivid blue flowers in summer and autumn
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Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Blue | Green | ||
| Autumn | Blue | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Sheltered Hardiness
H3Botanical details
- Family
- Commelinaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Genus
Commelina can be annuals or perennials, forming mats or clumps with usually lance-shaped leaves and 3-petalled flowers emerging in succession from boat-like bracts
- Name status
Accepted
How to grow
Cultivation
Grow in a fertile, well-drained soil in a warm, sheltered site in sun or partial shade. Provide a deep, dry winter mulch or in cold areas, lift plants and over winter in frost-free conditions
Propagation
Propagate by seed in spring, sown at 13-18°C or propagate by division in spring
Suggested planting locations and garden types
- Cottage and informal garden
- Flower borders and beds
Pruning
No pruning required
Pests
Generally pest-free
Diseases
Generally disease-free
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