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Herbaceous Perennial

Agapanthus caulescens

stalked African lily

A deciduous species and reasonably hardy. The leaves are produced on a distinct stem, the basal sheathing leaves sometimes very short giving this part of the plant a leek-like appearance. Foliage is 25-60cm long, with flower stems 60-180cm. The number of flowers in a flowerhead is variable; the flowers are usually dark violet-blue, paler towards the base and with darker midribs; often widely flared

Synonyms
Agapanthus nutans

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Grey Silver
Summer Blue Green Grey Silver
Autumn Blue Green Grey Silver
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Amaryllidaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
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
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
  • City and courtyard gardens
  • Cottage and informal garden
  • Mediterranean climate plants
  • 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

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