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ACACIA salicina

Image of Acacia salicina

Family

Fabaceae

Botanical Name

ACACIA salicina

Plant Common Name

Cooba, Willow Acacia

General Description

This acacia has a weeping habit and willow-like foliage, hence the common name. Like many acacias, it is adapted to hot, arid conditions and is very tough. It’s found across much of Eastern Australia in sunny thickets and open areas. In time it becomes a upright tree with a large dense canopy. It has a tendency to sucker, like willows do, which can be problematic in the landscape.

The leaves of willow acacia are long, thin and dark green. It bears clusters of pea-sized flowers that are fragrant, cream colored and not particularly showy. These are followed by narrow seed pods filled with seeds that drop to the ground and will germinate when growing conditions are right.

Full sun and perfectly drained soil are a must for this tree. It is an exceptional desert plant and performs well in the southwestern United States where winter cold is brief or minimal. Prune periodically to thin the canopy and reveal its naturally weeping character. Provide deep water in the summer to encourage a deeper more expansive root system, particularly in communities where seasonal gales commonly cause tree damage.

Characteristics

  • AHS Heat Zone

    12 - 10

  • USDA Hardiness Zone

    10 - 11

  • Sunset Zone

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

  • Plant Type

    Tree

  • Sun Exposure

    Full Sun

  • Height

    20'-40' / 6.1m - 12.2m

  • Width

    12'-15' / 3.7m - 4.6m

  • Bloom Time

    Fall, Winter

  • Native To

    Australia

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Drought

  • Growth Rate

    Fast

  • Water Requirements

    Xeric/Desert, Drought Tolerant

  • Habit

    Upright/Erect

Ornamental Features

  • Flower Interest

    Insignificant

  • Flower Color

    Yellow

  • Fruit Color

    Tan

  • Foliage Color (Spring)

    Dark Green

  • Foliage Color (Summer)

    Dark Green

  • Foliage Color (Fall)

    Dark Green

  • Foliage Color (Winter)

    Dark Green

  • Bark Color

    Gray

  • Fragrant Flowers

    Yes

  • 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

    Fine

  • Foliage Sheen

    Matte

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Screening / Wind Break, Shade Trees, Street Trees

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    Yes