Casuarina glauca 'Cousin It' - Evergreen Trees Direct

Casuarina glauca 'Cousin It'

Name: Casuarina glauca 'Cousin It'
Brand: Evergreen Trees Direct
Price: 160.00 AUD
Availability: InStock

$160.00

Tax included. Shipping calculated at checkout.

987 in stock

Sizes: 30cm/33cm

30cm/33cm

Current Stock Height Guides

30cm/33cm: 0.9m – 1.8m Approx.

Trade Customers

We supply advanced trees to landscapers, developers, architects, and councils Australia-wide. Trade clients receive fast quotes, expert advice, and access to premium stock with reliable freight.

About Casuarina glauca 'Cousin It'

Casuarina glauca 'Cousin It' is a unique, low-growing Australian native groundcover with dense, trailing green foliage that creates a dramatic weeping effect. Its unusual form makes it ideal for spilling over retaining walls, softening hard edges, covering embankments, or as a sculptural element in modern and native gardens.

Tough and low maintenance, ‘Cousin It’ thrives in full sun to part shade and tolerates a wide range of soils, including poor and sandy types. It is highly drought and salt tolerant once established, making it suitable for coastal and urban environments. Its dense mat-like growth also helps with erosion control on sloped areas.

Key Information to Know

Evergreen / Deciduous

Casuarina glauca 'Cousin It' is an Evergreen (foliage year round) Tree

Mature Height & Width

Mature Height: 0.2–0.3 m

Mature Width: 2–4 m

Casuarina glauca 'Cousin It' is expected to grow 0.3–0.5 m per year (spreads steadily).

Frost Tolerance

Is Casuarina glauca 'Cousin It' frost tolerant?

Casuarina glauca 'Cousin It' is Frost Tolerant – Can handle light to moderate frost once established.

Flowering Information

Casuarina glauca ‘Cousin It’ produces very small, inconspicuous red to brown flowers along its fine, trailing stems. While barely visible, these seasonal blooms are part of its natural cycle and precede the formation of tiny woody fruiting cones.

Native Information

Is Casuarina glauca 'Cousin It' an Australian Native? Yes

Casuarina glauca 'Cousin It' is Native to Cultivar of Casuarina glauca, which is native to coastal New South Wales and Queensland.

Wildlife Value

Its thick, ground-hugging foliage provides shelter for lizards, insects and small ground-dwelling wildlife, while its flowers support native bees and beneficial insects. This low, spreading habit also helps stabilise soil and encourages micro-habitats that boost garden biodiversity.

Sunlight Information

Casuarina glauca 'Cousin It' will thrive best in:

Full Sun
Part Shade

Preffered Soil

Casuarina glauca ‘Cousin It’ performs best in well-drained sandy or loam soils and tolerates slightly acidic to slightly alkaline conditions. It can struggle in heavy clay or poorly drained ground unless improved with organic matter and coarse material to increase drainage. Keep soil evenly moist during establishment, then reduce watering as it matures and develops outstanding drought resilience.

Botanical Information

Common Name: Groundcover Sheoak

Genus: Casuarina

Botanical Species: Casuarina glauca 'Cousin It'

Family: Casuarinaceae

Botanical Name: Casuarina glauca ‘Cousin It’

Landscape Uses

Groundcovers
Underplanting
Council or Civic Landscapes
Plant in Pots (or) Suitable for Pots

Casuarina glauca 'Cousin It' works in an:

Australian Native Garden – celebrates local plants with natural character.
Modern Garden – sleek, minimal, and design-led planting.
Coastal Garden – relaxed, seaside feel with hardy, textural plants.
Low-maintenance Garden – resilient choices for easy care and year-round appeal.
Contemporary / Architectural Garden – striking forms for bold design statements.

Planting, Spacing & Care

Choose a sunny or partly shaded site with well-drained soil.
Dig a hole twice the width of the root ball.
Add compost or native mix to improve soil structure.
Water deeply after planting and mulch around the base.
Space 1–1.5 metres apart for full ground coverage.

60–90 cm apart for full coverage in 1–2 years

Water regularly during the first year; minimal watering required once mature.
Fertilise lightly in spring with a native slow-release fertiliser.
Trim lightly to control spread or maintain shape if desired.

Sandy soils: Excellent; ideal for coastal and free-draining conditions.
Loamy soils: Perfect for lush, even growth.
Clay soils: Tolerates light clay if well-drained.
Coastal soils: Perfectly suited to salt and wind exposure.
Poor soils: Performs well in low-nutrient conditions; avoid over-fertilising.

Casuarina glauca 'Cousin It' is expected to grow 0.3–0.5 m per year (spreads steadily).

Medium Growth Rate

Root Ball Dimensions (Width × Depth) For Planting

Use this as a reference when digging your planting hole. We recommend digging at least 10% wider than the dimensions below to encourage strong root development.

30cm Pot: 33cm (W) × 30cm (D)
40cm/45L Pot: 44cm (W) × 41.5cm (D)
50cm Pot / 70L Pot: 55cm (W) × 41.8cm (D)
100L Bag: 50.6cm (W) × 52.8cm (D)
150L Bag: 66cm (W) × 55cm (D)
200L Bag: 71.5cm (W) × 60.5cm (D)
300L Bag: 88cm (W) × 63.8cm (D)
400L Bag: 99cm (W) × 66cm (D)
500L Bag: 122cm (W) × 66cm (D)
750L Bag: 134cm (W) × 69cm (D)
1000L Bag: 146.3cm (W) × 71.5cm (D)
2000L Bag: 176cm (W) × 82.5cm (D)

Ideal Conditions

Tropical QLD (Cairns, Townsville)
Subtropical QLD (Brisbane, Gold Coast, Sunshine Coast)
Inland QLD (Darling Downs, Central QLD)
Northern NSW (Byron, Coffs, Armidale)
Sydney & Central Coast
Inland NSW / Tablelands (Orange, Bathurst, Canberra)
Melbourne & Surrounds (Metro, Bayside, Geelong, Bellarine, Mornington)
Western District & Central VIC (Ballarat, Bendigo, Hamilton)
Gippsland (Latrobe Valley, East Gippsland)
Adelaide Metro & Coastal
Adelaide Hills & Barossa
Riverland & Murraylands

Thrives in

Full Sun
Part Shade

Frost Tolerance

Frost Tolerant – Can handle light to moderate frost once established.

Drought Tolerance

As a young plant it requires regular watering, but once established Casuarina ‘Cousin It’ develops excellent drought tolerance. It thrives in hot, dry and coastal environments and maintains its dense, cascading mat-like form with minimal supplementary watering.