About
Agapanthus 'Crystal' is a herbaceous perennial that reaches heights of 1 to 1.2 meters. It features elongated, strap-like green leaves that can grow up to 50 centimeters in length and 2 centimeters in width. In late summer to early autumn, it produces flower heads measuring 13 centimeters in diameter, with trumpet-shaped blooms that are about 3.5 centimeters wide. The flowers are predominantly white, accented by violet-blue midribs and edges, and they orient upward or slightly downward.
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, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Patio and container plants, Mediterranean climate plants, City and courtyard gardens, Coastal, Gravel garden
- 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
- In milder areas, grow outside in moisture-retentive but well-drained soil in full sun, and provide winter protection with a dry mulch; in colder areas, 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; 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