Agapanthus 'Blue Ice'
African lily 'Blue Ice'
An evergreen perennial to about 1m, with strap-shaped, glossy leaves, purple at the base. Large rounded umbels of very pale blue flower are produced on strong, upright stems from mid-summer to early autumn
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Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Blue | Green | ||
| Autumn | Blue | Green | ||
| Winter | Green |
Position
- Full sun
Aspect
West–facing or East–facing or South–facing
Exposure
ShelteredDrought resistance
Yes Hardiness
H3Botanical details
- Family
- Amaryllidaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Clump forming
- Potentially harmful
- Harmful if eaten. Wear gloves and other protective equipment when handling
- Genus
Agapanthus are clump-forming perennials with narrowly strap-shaped leaves, evergreen in some species, and erect stems bearing umbels of funnel-shaped blue or white flowers
- Name status
Accepted
How to grow
Cultivation
In mild areas, grow in well-drained soil in a sheltered, sunny position. Otherwise grow in a container positioned in full sun. Water well during the growing season and liquid feed monthly from spring to flowering. Overwinter the whole container in a cold greenhouse. See agapanthus cultivation
Propagation
Propagate by division every three to four years in spring
Suggested planting locations and garden types
- Coastal
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Mediterranean climate plants
- Cut flowers
- Flower borders and beds
- Wall side borders
Pruning
No need to cut down in autumn as the seedheads look attractive over winter
Pests
May be susceptible to slugs and snails and agapanthus gall midge
Diseases
May be susceptible to a virus
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.