• 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 'Bressingham Blue'

African lily 'Bressingham Blue'

African lily 'Bressingham Blue'

© RHS 2002

  • Other common names African lily 'Bressingham Blue'

  • 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 'Bressingham Blue' is an herbaceous perennial with umbels of funnel-shaped blue flowers in mid and late summer


  • Foliage Deciduous

  • 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)




  • Full Sun

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

  • Exposure Sheltered


  • Chalk


  • Chalk


  • Chalk


  • Chalk


  • MoistureMoist but well-drained

  • SoilLoam, Chalk, Sand, Clay

  • pHAcid, Alkaline, Neutral


  • 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 fertile, moist but well-drained soil in full sun or grow in a container. In cold areas, mulch well overwinter

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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