About
Agapanthus 'Glen Avon' is a herbaceous perennial that can grow to about 1 meter in height. It features broad, strap-like green leaves that remain throughout the year. The sturdy stems support large flower clusters, showcasing sky-blue petals that lighten as the plant matures, complemented by darker stripes at the center. This variety produces blooms in late summer. Young specimens are classified as half-hardy (H3), while established clumps exhibit increased hardiness (H4).
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
- South-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H3
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Evergreen
- Height
- 0.5-1 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Patio and container plants, City and courtyard gardens, Coastal, Gravel garden, Mediterranean climate 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 but generally pest-free
- Disease resistance
- May be susceptible to a virus