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EUPHORBIA milii

Image of Euphorbia milii

John Rickard

Family

Euphorbiaceae

Botanical Name

EUPHORBIA milii

Plant Common Name

Crown-of-Thorns

General Description

This thorny plant has some of the showiest flowers of all the Euphorbias. A native of Madagascar, crown-of-thorns is a tropical, succulent shrub that stays evergreen year-round where hardy. From spring to late summer it produces many flowers with two showy bracts that are most typically scarlet red. Cultivars with orange, pink, white or creamy yellow bracts are also available.

Highly drought tolerant, this tough tropical requires full sun and can tolerate average to poor soil with good drainage. In tropical zones, crown-of-thorns may be grown in mixed borders or foundation plantings. In temperate regions it is commonly grown as a houseplant or in container plantings.

Characteristics

  • AHS Heat Zone

    12 - 1

  • USDA Hardiness Zone

    10 - 15

  • Sunset Zone

    H1, H2, 13, 21, 22, 23, 24

  • Plant Type

    Shrub

  • Sun Exposure

    Full Sun

  • Height

    1'-4' / 0.3m - 1.2m

  • Width

    18"-24" / 45.7cm - 61.0cm

  • Bloom Time

    Spring, Late Spring, Early Summer, Summer, Late Summer

  • Native To

    Madagascar

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Growth Rate

    Fast

  • Water Requirements

    Drought Tolerant, Average Water

  • Habit

    Oval/Rounded

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Red

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Foliage Color (Winter)

    Green

  • Bark Color

    Sandy Brown

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Bedding Plant, Container, Edging, Foundation, Houseplant, Mixed Border, Tropical

  • Sharp or Has Thorns

    Yes

  • Invasive

    No

  • Self-Sowing

    No