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AGAPANTHUS 'Midnight Blue'

Image of Agapanthus 'Midnight Blue'

International Flower Bulb Centre



Botanical Name

AGAPANTHUS 'Midnight Blue'

Plant Common Name

African Lily, Lily-of-the-Nile

General Description

The large, flared flowers of 'Midnight Blue' are dark blue and appear atop short sturdy stems. Lily-of-the-Nile is a dramatic, evergreen tender perennial. Where hardy, it is best grown in the landscape but in colder climates it may be maintained as a container specimen if provided a large spacious pot. This tends to be a spring and summer bloomer, but bloom time can be variable depending on the local climate and water availability.

The long, thin, strap-like leaves of this cultivar are medium green and produced in substantial clumps from thick fleshy roots that spread. Though technically evergreen, the foliage may die back until spring if plants are subjected to hard, but not killing, frost. Attractive rounded clusters of small, lily-like flowers are produced throughout the growing season. Each six-petaled bloom is bell-shaped. Bees pollinate the flowers and small seed capsules, that turn from green to brown, follow. Cut spent stems back to keep plants looking tidy and encourage further bloom.

Provide lily-of-the-Nile full to partial sun and soil that is fertile, well-drained and has a neutral pH. For best flowering, water regularly during the summer months, but keep plants drier through the winter months. Established plants will withstand substantial periods of drought. Specimens grown in containers or small garden spaces should be divided regularly as clumps tend to spread vigorously. Where marginally hardy, grow in a sheltered spot and mulch in late autumn. Indoors, overwinter in a bright spot and water sparingly while the plant is dormant.

Lily-of-the-Nile is best planted as a groundcover, border specimen or container plant. It is quite carefree; pest and disease problems are few and deer do not feed on it. The showy umbels make dramatic cut flowers.


  • AHS Heat Zone

    12 - 10

  • USDA Hardiness Zone

    8 - 11

  • Sunset Zone

    H1, H2, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Tender Perennial

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    14"-18" / 35.6cm - 45.7cm (16)

  • Width

    18"-24" / 45.7cm - 61.0cm

  • Bloom Time

    Late Spring, Early Summer, Summer, Late Summer

  • Native To

    Hybrid Origin, South Africa

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Growth Rate


  • Water Requirements

    Drought Tolerant, Average Water

  • Habit


  • Seasonal Interest

    Summer, Fall

Ornamental Features

  • Flower Interest


  • Flower Color

    Dark Blue, Blue Violet

  • Foliage Color (Spring)

    Green, Dark Green

  • Foliage Color (Summer)

    Dark Green

  • Foliage Color (Fall)

    Dark Green

  • Foliage Color (Winter)

    Dark Green

  • Fragrant Flowers


  • Fragrant Fruit


  • Fragrant Foliage


  • Bark or Stem Fragrant


  • Flower Petal Number


  • Repeat Bloomer


  • Showy Fruit


  • Edible Fruit


  • Showy Foliage


  • Foliage Texture


  • Foliage Sheen


  • Evergreen


  • Showy Bark


Special Characteristics

  • Usage

    Container, Cutflower, Edging, Groundcover, Houseplant, Mixed Border, Rock Garden / Wall

  • Sharp or Has Thorns


  • Invasive


  • Attracts


  • Self-Sowing