About
Agapanthus 'Phantom' is a slow-growing herbaceous perennial that reaches heights of up to 1.1 meters. It features evergreen, strap-like green foliage and, on mature specimens, produces flower clusters that transition from pale violet-blue at the tips to white at the center, blooming in late summer.
About the genus
Agapanthus consists of perennial plants that grow in clusters, featuring long, narrow leaves. Some species maintain their foliage year-round, while others do not. These plants produce upright stems topped with rounded clusters of bell-shaped flowers, which can be blue or white.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- West-facing, East-facing, South-facing
- Exposure
- Sheltered
- UK hardiness
- H3
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Evergreen
- Height
- 1-1.5 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Coastal, Gravel garden, Mediterranean climate plants, Cottage and informal garden, Patio and container plants
- Toxicity
- Humans/Pets (dogs, cats): harmful if eaten. Wear gloves and other protective equipment when handling. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Care notes
- Cultivation
- Grow in containers in peat-free, loam-based compost, water freely when in growth but sparingly in winter, and apply a balanced liquid fertilizer monthly from spring until flowering; in mild areas, grow outside in moisture-retentive but well-drained soil in full sun, and provide winter protection with a dry mulch; for more advice, see Agapanthus cultivation
- Pruning
- No pruning required except cutting back dead flower stems, but allow them to remain until spring, because the seedheads look attractive over winter
- Propagation
- Propagate by division between spring and early summer, or in early autumn after plants have finished flowering
- Pest resistance
- May be susceptible to slugs and snails and agapanthus gall midge
- Disease resistance
- May be susceptible to a virus