Casuarina glauca 'Cousin It' - Evergreen Trees Direct

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Casuarina glauca 'Cousin It'

$160.00

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Size: 30cm/33cm

30cm/33cm 40cm/45L

Current Stock Height Guides

30cm/33cm: 0.9m – 1.8m Approx.

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you mustconfirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

Mature Height & Width

Mature Height: 0.2m to 0.3m

Mature Width: 2m to 4m

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

Root Ball Dimensions

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)

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Phone: (03) 7042 3318

About Your New Casuarina glauca 'Cousin It'

Casuarina glauca 'Cousin It' forms a dense mat of fine weeping needle-like foliage just 20 to 30 centimetres high, cascading beautifully over walls, edges and rock work. It reads as flowing texture rather than as a conventional groundcover, which is why designers use it so heavily.

'Cousin It' spreads 2 to 4 metres wide at 30 to 50 centimetres per year, filling in steadily without becoming invasive or needing to be cut back. It suppresses weeds once established, holds soil on banks and batters, and works equally well spilling from a raised planter or a large pot.

This Australian native tolerates light to moderate frost once established, along with salt, wind, poor soils and extended dry. It grows in full sun to part shade and needs essentially no maintenance beyond the occasional tidy of a wayward runner.

Frequently Asked Questions

About Casuarina glauca 'Cousin It'

How big does Casuarina 'Cousin It' grow?

'Cousin It' stays just 20 to 30 centimetres tall and spreads 2 to 4 metres wide. It is a genuinely prostrate form and will not build up in height over time.

How fast does 'Cousin It' spread?

It spreads at 30 to 50 centimetres per year, filling in steadily. Expect two to three seasons to close a mass planting depending on spacing.

Is 'Cousin It' salt tolerant?

Yes. Casuarina glauca is naturally a coastal and estuarine species, and 'Cousin It' inherits strong salt and wind tolerance, which makes it excellent for seaside gardens.

Does 'Cousin It' suppress weeds?

Yes. Once the mat closes over it forms dense cover that suppresses most weed germination, which is a large part of its value in commercial and civic landscapes.

Can 'Cousin It' be grown in a pot?

Yes. It is particularly effective spilling over the edge of a large pot, raised planter or retaining wall, where the cascading habit can be seen.

How far apart should I plant it for groundcover?

Plant 1 to 1.5 metres apart for a continuous mass. Closer spacing closes the gaps faster but the plants will eventually merge regardless.

Is 'Cousin It' frost tolerant?

It handles light to moderate frost once established. Protect young plants through their first winter in colder inland districts.

Enriched Planting Mix (AO Certified)

$21.95

Enriched Planting Mix is a certified organic blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent, bagged in 30L. It is built to be dug through existing garden soil at planting time rather than used on its own, and the gypsum is what sets it apart from a plain compost.

Gypsum helps break up heavy clay so water and roots can move through it, while the compost and manure return organic matter and nutrient to tired ground. The coarse bark holds structure and keeps air around the root zone, and the wetting agent keeps moisture in the soil longer after rain or watering.

Use it when planting trees, shrubs, roses, fruit trees and exotic garden plants, particularly into clay. Dig a hole twice the width of the pot and 7 centimetres deeper, then mix roughly one third planting mix through the excavated soil. Spread 7 centimetres of that improved soil in the base before setting the plant in.

Frequently Asked Questions

About Enriched Planting Mix

What is Enriched Planting Mix made from?

It is a blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent. Each part has a job. The compost and manure supply organic matter and nutrient, the gypsum works on clay structure, the bark keeps air around the roots and the wetting agent holds moisture in the soil.

What plants is it suitable for?

It suits exotic garden plants, including roses, ornamental and deciduous trees, fruit trees, shrubs and perennials, and it earns its keep most on heavy clay sites. It is a planting mix rather than a potting mix, so its job is improving soil at planting time. Phosphorus sensitive natives are the one clear exception.

Is it safe for natives?

No, not for the phosphorus sensitive ones. The composted animal manure in this blend lifts phosphorus well above what Proteaceae such as Banksia, Grevillea, Hakea and Protea will tolerate, and the result can be leaf burn, dieback and plant death. Use the Native Potting Mix for those species, or plant them into unimproved local soil.

Is it certified organic?

Yes. It is a certified organic product with no chemical additives, which is why the manure and compost in it are fully composted rather than raw. That makes it sound around fruit trees and vegetable beds, and it means you are adding genuine organic matter to your soil rather than a synthetic conditioner.

How much do I need?

Work on roughly one third planting mix to two thirds of the soil you dug out of the hole. For a shrub out of a 200 millimetre pot that is only a few litres. An advanced tree going into a large hole will take considerably more. Judge the quantity by the volume of the hole rather than the size of the plant.

Can I use it in pots?

It is not a potting mix and should not be used on its own in a container. The blend is designed to be diluted through garden soil, and used straight in a pot it holds too much water and settles badly. For containers, reach for a premium potting mix, or the native mix if you are potting natives.

Does it need to be watered in?

Yes. Water the plant well several hours before you plant it, then water thoroughly again once the hole is backfilled and the soil firmed down. That first deep watering settles the improved soil around the root ball and drives out air pockets. Keep the water up over the first few months while the roots establish.

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Enriched Planting Mix (AO Certified)

$21.95

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Uses in my Garden

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.

Is Casuarina glauca 'Cousin It' Evergreen or Deciduous?

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

Mature Height & Width

Mature Height: 0.2m to 0.3m

Mature Width: 2m to 4m

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

Growth Rate of Casuarina glauca 'Cousin It'

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

They are considered to have a:

Medium Growth Rate

Frost Tolerance & Ideal Climate to plant Casuarina glauca 'Cousin It'

Is Casuarina glauca 'Cousin It' frost tolerant?

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

Does Casuarina glauca 'Cousin It' Flower?

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.

Does Casuarina glauca 'Cousin It' flower?

No - Doesn't Flower

Flowering Period:

Not Applicable

Flower Type:

Not Applicable

Flower Colour:

Not Applicable

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

Yes

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

What is the Wildlife Value of Casuarina glauca 'Cousin It' ?

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.

How much Sunlight does Casuarina glauca 'Cousin It' need?

Casuarina glauca 'Cousin It' will thrive best in:

Full Sun
Part Shade

Preferred 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.

Is Casuarina glauca 'Cousin It' Drought Tolerant?

Is Casuarina glauca 'Cousin It' Drought tolerant?

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.

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How To Plant Your Casuarina glauca 'Cousin It'

Site: Choose a well-drained position in full sun to part shade with room for the canopy to develop.

Soil preparation: Enrich the planting area with quality compost and aged manure for a strong establishment phase.

Hole: Dig twice as wide as the root ball and the same depth.

Planting: Position level with the surrounding soil, backfill gently, firm in, then water deeply to settle the roots.

Recommended Planting Spacing For Your Casuarina glauca 'Cousin It'

Feature tree: 3 to 4 metres apart to allow the full canopy and form to develop.

Avenue planting: 3 metres apart for a uniform soft-textured avenue.

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

Medium Growth Rate

Long Term Care For Your Casuarina glauca 'Cousin It'

Watering: Water deeply twice weekly through the first 12 months. Once established, this is drought tolerant and only needs a deep soak during extended dry periods.

Mulching: Apply a 5 to 7 centimetre layer of organic mulch over the root zone, keeping it 5 centimetres clear of the trunk.

Pruning: Minimal pruning required. Light tip prune in late winter to maintain shape if used as hedging or screening. For a clear trunk feature, remove lower branches as the tree grows.

Fertilising: Apply a slow-release native blend in early spring and again in autumn. Avoid high-phosphorus formulations as a precaution.

Pest and disease: Hardy against most pests and diseases. Occasional inspection in warm humid conditions is all that's needed.

Planting Your Casuarina glauca 'Cousin It' in Different Soil

Casuarina glauca performs best in well-drained sandy loam or loam with a slightly acidic to neutral pH. Adaptable to a wide range of soils when drainage is improved with organic matter.

Sandy soil: Free-draining and ideal. Mulch well to maintain consistent moisture.

Clay soil: Improve drainage with gypsum and organic compost before planting.

Loam: The preferred soil for steady root development and consistent growth.

pH: Slightly acidic to neutral preferred. Mulch with composted leaf litter to maintain levels naturally.