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HAWORTHIA coarctata

Image of Haworthia coarctata

Jessie Keith

Family

Liliaceae

Botanical Name

HAWORTHIA coarctata

Plant Common Name

Haworthia

General Description

This somewhat upright-growing haworthia produces tightly-packed, columnar rosettes of pointed leaves marked with numerous tiny white spots. Old, establish plants resemble sea coral. This frost-tender, succulent perennial is native to South Africa's Eastern Cape Province. It develops into a substantial clump comprised connected by fleshy, fibrous roots.

The rosettes are made up of pointy, rigid leaves that grow into short upright columns. Raised dots or bumps (tubercles) cover the leaves. When growing conditions are chilly or dry the normally the bluish to olive leaves turn reddish or blackish burgundy (a sign of stress). Anytime from late spring to fall, the largest, most mature rosettes produce long, whip-like flower stems. Tiny greenish-white, tubular flowers occur on the stems high above the foliage.

Grow haworthia in sandy, fast-draining soil that is barely moist. A non-acid soil is ideal. Partial sun is best, particularly a site with brief morning sun followed by very bright, indirect light the rest of the day. Excessive sun exposure causes leaves to blush reddish orange and sometimes to scald and die. Wet soil quickly causes root and stem rot, especially during chilly winter months. Low ambient humidity is always needed. Where hardy, plant zebra plants as a shady rock garden groundcover accent or in patio containers. It also fares well as a houseplant if provided bright, filtered light, light water and sandy potting mix.

Characteristics

  • AHS Heat Zone

    12 - 1

  • USDA Hardiness Zone

    10 - 15

  • Sunset Zone

    15, 16, 17, 20, 21, 22, 23, 24

  • Plant Type

    Cactus or Succulent

  • Sun Exposure

    Partial Shade

  • Height

    6"-10" / 15.2cm - 25.4cm

  • Width

    8"-16" / 20.3cm - 40.6cm

  • Bloom Time

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

  • Native To

    Southern Africa, South Africa

Growing Conditions

  • Soil pH

    Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Sand

  • Tolerances

    Drought

  • Growth Rate

    Medium

  • Water Requirements

    Drought Tolerant

  • Habit

    Rosette/Stemless

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Insignificant

  • Flower Color

    White, Green

  • Foliage Color (Spring)

    White, Blue Green, Olive

  • Foliage Color (Spring) Modifier

    Spotted/Mottled

  • Foliage Color (Summer)

    White, Blue Green, Olive

  • Foliage Color (Summer) Modifier

    Spotted/Mottled

  • Foliage Color (Fall)

    White, Blue Green, Olive

  • Foliage Color (Fall) Modifier

    Spotted/Mottled

  • Foliage Color (Winter)

    White, Blue Green, Olive, Pink, Burgundy

  • Foliage Color (Winter) Modifier

    SpottedMottled

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Coarse

  • Foliage Sheen

    Matte

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Container, Houseplant, Rock Garden / Wall, Tropical

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    No