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    • Photo of Acacia cultriformis landscape by Far Out Flora

    Photo by Far Out Flora

    Used with permission, all rights reserved

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    Acacia cultriformis

    Also Known As

    • Racosperma cultriforme
    • Knife Wattle
    • Knifeleaf Acacia
    • Knifeleaf Wattle

    Plant type

    tree, shrub

    size

    • H: 6'-20'
    • W: 10'-15'

    planting zones

    • 8b-11

    More Options

    Acacia cultriformis plant details

    Acacia cultriformis is a broadleaf evergreen shrub or tree with blue and white foliage. In spring yellow flowers emerge. Features glaucous texture. Attracts bees making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and occasional - low water. Drought tolerant once established. Prefers to be dry in summer. Adapts to various soil conditions. Does well in acidic, alkaline, average, clay, gritty, lean, rocky and well-drained soil. A good option if you're seeking something heat tolerant and seaside / salt tolerant.

    CHARACTERISTICS OF Acacia cultriformis

    Plant type: shrub or tree
    Plant family: fabaceae
    Foliage: evergreen blue and white
    Mature size: 10 FT - 15 FT - wide, 6 FT - 20 FT - tall
    Flowers: yellow blooms in spring
    Uses: fragrant, hedge, small tree, year round interest

    GROWING CONDITIONS for Acacia cultriformis

    USDA Zones: 8b - 11
    Sun exposure: sun - mostly sun
    Watering frequency: occasional - low
    Resistant to: deer, heat and seaside / salt
    Soil needs: acidic, alkaline, average, clay, gritty, lean, rocky and well-drained

    Nursery contributed plant descriptions

    Widely cultivated tall shrub, 6-10', from Australia. Drooping branches with blue-gray, almost triangular leaf-like phyllodes (flattened leaf stalks) held close to the stems. Perfumed, rounded clusters of bright yellow spring flowers on long sprays. Excellent for hedging. Full sun. Drought tolerant once established. Though to be frost hardy in USDA zone 8 but difficulties in the recent hard winters suggest upper zone 8, that is protected or where protection can be provided in cold winter moments.

    By: Cistus Nursery

    Small evergreen tree, bluish triangular phyllodes, yellow flowers in winter/spring. Are they leaves? No, they're phyllodes! Like, duh! That's what you get with this small tree to 20', one of many Australian Acacias, a group that offers an astounding variety of foliage texture. 'Knife Wattle' as it is called will appreciate a site in full sun with well drained soil rich in mycorrhizae. It will reward you with beautiful blue phyllodes all year and a profusion of fragrant, round yellow flowers in the spring. It's blue hue would compliment a desert garden splendidly, and if it ever grows too large the cut foliage is also excellent for arrangements. It should tolerate hot climates well, and cold temperatures down to 15(10?) °F

    By: The Desert Northwest

    Gardening facts about Acacia cultriformis plant

    How to Grow Acacia cultriformis

    • Sun Exposure

      • sun - mostly sun

    • Water Needs

      • occasional - drought tolerant

    • Water Needs

      • dry in summer

    • Soil Needs

      • clay
      • acidic
      • alkaline
      • adaptable
      • average
      • lean
      • well-drained
      • rocky
      • gritty

    • Special Situation

      • heat tolerant
      • seaside / salt tolerant

    Features

    • Foliage Color

      • white
      • blue

    • Flower Color

      • yellow

    • Wildlife

      • bees
      • deer resistant

    • Flower Season

      • spring

    • Foliage Season

      • evergreen

    • Texture

      • glaucous

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