About
Campanula 'Addenda Blue Star' is a compact, trailing perennial that creates a tidy mound of small, rounded to ovate, mid-green leaves with a serrated edge. This plant produces an abundance of violet-blue, star-shaped flowers with white centers, which bloom on short stems that rise slightly above the foliage, offering an extended display throughout the summer months. Ideal for container gardening, this species thrives in well-drained conditions and does not tolerate excessive moisture during winter.
About the genus
Campanula encompasses a range of plants that can be annuals, herbaceous perennials, or evergreen perennials. These species produce bell or star-shaped flowers, frequently in shades of blue, during the late spring or summer months.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Alkaline, Neutral, Acid
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- East-facing, North-facing, South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Matforming, Trailing
- Foliage
- Deciduous
- Height
- 0.1-0.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Hanging basket, Patio and container plants
Care notes
- Cultivation
- Will grow well in fertile, neutral to alkaline soil that is moist but well-drained, in full sun or partial shade avoiding wet conditions in winter. A semi-shade position will ensure the best flower colour is preserved. Very suitable for hanging baskets and containers.
- Pruning
- cut back after flowering for a second flush in september
- Propagation
- Propagate by seed
- Pest resistance
- May be susceptible to slugs and snails
- Disease resistance
- May be susceptible to a rust, powdery mildews and leaf spot