Agapanthus 'Celebration'

RHS Plant Profile

African lily 'Celebration'

Herbaceous Perennial

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A clump-forming perennial to 0.8m tall with upright, strap-shaped, dark green leaves and erect stems bearing rounded, open umbels of pendent, slender, soft blue flowers in Summer

Position

Full sun

Soil Types

Loam, Sand, Chalk, Clay

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.5-1 metres

Growing Conditions

Loam Sand Chalk Clay

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing or West–facing or East–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): H4
Drought Resistance: Yes

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Amaryllidaceae
Native to GB/Ireland: 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: Unresolved

How to Grow

Cultivation

In mild areas, grow in well-drained soil in a sunny, sheltered position. In areas with cold, wet winters, over-winter in a cold greenhouse and plant out in early Summer. Also suitable for a container in full sun, water well during the growing season and liquid feed monthly from Spring to flowering. See agapanthus cultivation

Propagation

Propagate by division every three to four years in Spring

Suggested planting locations and garden types

Cottage and informal garden
Architectural
Coastal
Patio and container plants
Mediterranean climate plants
Sub-tropical
City and courtyard gardens
Flower borders and beds
Cut flowers
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, watch out for agapanthus gall midge

Diseases

May be susceptible to a virus