Agapanthus 'Northern Star'PBR
African lily 'Northern Star'
A free-flowering cultivar up to 1m tall with glossy green leaves flushed dark purple at the base. Tall, stiff stems support rounded heads of dark violet-blue flowers with purple stripes down each petal
Size
Ultimate height
0.5–1 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 | Purple Green | |||
|---|---|---|---|---|
| Summer | Blue Purple | Purple Green | ||
| Autumn | Purple Green | |||
| Winter |
Position
- Full sun
Aspect
West–facing or South–facing or East–facing
Exposure
Sheltered Hardiness
H4Botanical details
- Family
- Amaryllidaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Bushy
- 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
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
- 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 the 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.