About
The Coelestis Group consists of tuberous perennials that create a spreading clump of upright stems adorned with lush foliage. In summer and autumn, these plants produce bright blue flowers.
About the genus
Commelina species can be classified as either annuals or perennials, typically developing mats or clumps. They are characterized by lanceolate leaves and flowers with three petals that appear sequentially from boat-shaped bracts.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, North-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H3
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden
Care notes
- 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
- Pruning
- No pruning required
- Propagation
- Propagate by seed in spring, sown at 13-18°C or propagate by division in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free