• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Agapanthus africanus 'Albus' misapplied

white African lily [misapplied]

white African lily [misapplied]

© RHS

  • Other common names white African lily [misapplied]

  • Family Agapanthaceae

  • 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

  • Details Plants grown as Agapanthus africanus 'Albus' are evergreen perennial with narrow, erect leaves and long-stemmed umbels of white, trumpet-shaped flowers in late summer

Characteristics

  • Foliage Evergreen

  • Habit Clump-forming

  • 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)

    H3

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or East-facing or West-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Chalk

    Chalk

  • Sand

    Sand

  • Clay

    Clay

  • MoistureMoist but well-drained

  • SoilLoam, Chalk, Sand, Clay

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in a container of moist but well-drained compost and position in full sun. Water during the growing season and liquid feed monthly from spring to flowering. Over the winter, bring container under cover

Propagation Propagate by division every 3 to 4 years in spring

Suggested planting locations and garden types Flower borders and beds Cut Flowers Mediterranean Climate Plants Patio & Container Plants Architectural Gravel Garden Coastal

How to care

Pruning No need to cut down in the autumn, as the seedheads look attractive over winter

Pests Generally pest free

Diseases Generally disease free, but a virus disease may be a problem

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