Agapanthus 'Sylvine'

RHS Plant Profile

African lily 'Sylvine'

Herbaceous Perennial

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A compact, clump-forming, herbaceous perennial to about 70cm, with strap-shaped leaves. Rounded heads of funnel-shaped flowers, of mid-blue petals with deep blue midribs, are produced in late summer and early autumn

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

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

Growing Conditions

Chalk Loam Sand

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

Position

Full sun

Aspect: 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): H4

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: Accepted

How to Grow

Cultivation

In mild areas, plant out in well-drained soil in a sunny, sheltered position. Otherwise, grow in a container in a sunny spot, and overwinter indoors, in a cool greenhouse or conservatory to protect from frost. Water during the growing season and liquid feed monthly from spring to flowering. See agapanthus cultivation

Propagation

Propagate by division in spring

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Patio and container plants
Cottage and informal garden
Flower borders and beds

Pruning

No pruning required; seedheads can provide good winter structure

Pests

May be susceptible to agapanthus gall midge, slugs and snails

Diseases

May be susceptible to a virus