About
Agapanthus 'Big Dutch Blue' is a deciduous perennial that forms clumps, featuring narrow, strap-like leaves of a mid-green hue. Its robust, upright stems support clusters of trumpet-shaped flowers in a mid-blue shade, each petal adorned with a darker central rib. These blooms emerge during the summer months.
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, Sand, Loam
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, 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 fertile, moist but well-drained soil in full sun. In cold areas mulch hardy hybrids in winter. In containers grow in peat-free, loam-based compost. Apply a balanced liquid feed monthly from spring until flowering. For more information see agapanthus cultivation.
- Pruning
- Remove leaves as they naturally die back, deadhead complete flower stems as flowers go over
- Propagation
- Propagate by seed when ripe in autumn or spring and keep seedlings in cold frame overwinter - they will flower in 2-3years or propagate by division every three to four years in spring
- Pest resistance
- May be susceptible to slugs and snails and agapanthus gall midge
- Disease resistance
- May be susceptible to a virus