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Herbaceous Perennial

Agapanthus 'White Giant'

African lily 'White Giant'

An evergreen, clump-forming perennial with strap-like dark green leaves. Upright stems from between 1-1.5m in height produce large, rounded clumps of star-shaped white flowers throughout the summer. Works well as part of a mediterranean or mixed planting scheme.

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Ultimate height

1–1.5 metres

Time to ultimate height

1–2 years

Ultimate spread

0.5–1 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

East–facing or South–facing or West–facing

Exposure

Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Amaryllidaceae
Native to GB / Ireland: No
Foliage: Evergreen
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: Accepted

How to grow

Cultivation

In mild areas, grow in well-drained soil in a sunny, sheltered position. Otherwise grow in a container and position in full sun. Water 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

Cottage and informal garden
Patio and container plants
Coastal
Architectural
Gravel garden
Mediterranean climate plants
Cut flowers
Flower borders and beds
Edible fruit

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

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