Atriplex cinerea
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Grey Saltbush
Botanical Name: Atriplex cinerea
Family: Amaranthaceae
Origin: Coastal Australia (native to SA)
Plant Type: Hardy evergreen shrub
Overview
A tough, highly salt-tolerant Australian native shrub valued for its striking silver-grey foliage and ability to withstand coastal winds and dry conditions. Naturally found along South Australia’s coastlines, it is ideal for binding sandy soils, creating low shelter, and adding year-round colour contrast to native or water-wise gardens. Excellent for habitat planting, hedging, or mass displays in exposed coastal sites.
Key Features
- Mature Size: 1–2 m H × 1.5–3 m W
- Growth Rate: 20-40 cm per year under good conditions
- Foliage: Evergreen; dense, silvery-grey leaves, reflective and drought-adapted
- Flowers: Small, inconspicuous yellowish-green flowers in spring–summer
- Seasonal Interest: Year-round silvery-grey foliage with seasonal flower clusters
- Wildlife Value: Provides shelter and nesting habitat for small birds and invertebrates
- Tolerance: Extremely salt-tolerant (front-line coastal), drought- and heat-hardy, tolerates wind and light frost
- Planting Density: Informal hedge/shelter: 1–1.5 m apart; Mass planting: 1–2 m apart depending on effect desired
- Pet Friendly: Non-toxic to cats and dogs (safe in family gardens).
Where It Works Best
- Sunlight: Full sun (best growth and foliage colour)
- Soil: Sandy to sandy-loam; tolerates poor, saline soils
- Water Needs: Establishment: 1-2 deep soaks/week for 8–12 weeks. Established: deep soak every 2–3 weeks in summer (weekly in heatwaves); minimal in winter
- Maintenance: Light tip pruning after flowering to maintain compact form; can be shaped as a hedge. Mulch to suppress weeds, though minimal care is generally needed. Avoid heavy fertilisers.
- Lifespan: 10–20+ years in SA coastal and low-rainfall gardens
- Climate Zones: Mediterranean, semi-arid, coastal SA
- Soil pH: Tolerates a wide range from slightly acidic to alkaline and saline soils
Landscape & Design Ideas
- Coastal shelterbelt or windbreak
- Grey foliage contrast plant in native borders
- Mass planting for erosion control in sandy soils
- Informal hedging or screening in coastal suburbs
- Habitat planting for wildlife-friendly gardens
Why You Will Love It
With its luminous grey foliage, extreme salt and drought tolerance, and low-care nature, Atriplex cinerea is a perfect choice for Adelaide and South Australian coastal gardens, offering both beauty and resilience where other plants struggle.