Agapanthus campanulatus subsp. patens
spreading bell agapanthus
A clump forming herbaceous perennial to 1.2m, with narrowly strap-shaped, greyish-green leaves and erect stems bearing umbels of widely trumpet-shaped, blue flowers from late summer
Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Grey Silver | |||
|---|---|---|---|---|
| Summer | Blue | Green Grey Silver | ||
| Autumn | Blue | Green Grey Silver | ||
| Winter |
Position
- Full sun
Aspect
West–facing or East–facing or South–facing
Exposure
Sheltered Hardiness
H4Botanical details
- Family
- Amaryllidaceae
- Native to the UK
- No
- Foliage
- Deciduous
- 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
Correct
- Plant range
- S Africa
How to grow
Cultivation
Grow in fertile, moist but well-drained soil in full sun or grow in a container. In cold areas, mulch well overwinter. See Agapanthus cultivation for further advice
Propagation
Propagate by division every 3 to 4 years in spring
Suggested planting locations and garden types
- Coastal
- Cottage and informal garden
- Mediterranean climate plants
- City and courtyard gardens
- Cut flowers
- Flower borders and beds
Pruning
No need to cut down 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.