Casuarina 'Green Waves'

$140.00

Tax included. Shipping calculated at checkout.

Size: 30cm/33cm

30cm/33cm 40cm/45L

Current Stock Height Guides

30cm/33cm: Enquire within for height guide information.
40cm/45L: Enquire within for height guide information.

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: 1.5m to 2m (approx.)

Mature Width: 1.5m to 2m

Casuarina 'Green Waves' is expected to grow 60cm to 90cm per year (approx.).

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 'Green Waves'

Casuarina glauca 'Green Waves' is a compact Australian native shrub form of the swamp oak, evergreen and densely rounded. What looks like fine needle foliage is actually a mass of slender green branchlets, and they move in the lightest breeze. The effect is soft and fine textured rather than prickly.

It handles full sun to part shade, salt wind, heavy clay, periodically wet ground and long dry spells once established. Growth is roughly 60 to 90 centimetres a year. It survives heavy and frequent frost without damage, and grows across temperate, Mediterranean, subtropical and coastal Australia with very little attention.

Typical uses are low screens, informal hedges, mass planting on banks, rural windbreak understorey and large pots. Coastal and exposed urban sites are where it earns its place, holding shape where softer shrubs burn. Councils and developers use it because it survives neglect and still reads as a considered planting.

Frequently Asked Questions

About Green Waves Sheoak

What is Green Waves Sheoak?

It is a compact cultivar of Casuarina glauca, the swamp oak, selected for a dense rounded habit rather than the tall tree form of the species. The fine weeping branchlets give it the look of a soft conifer, and it stays shrub sized, which makes it useful where the parent species would be far too large.

How big does it grow?

About 1.5 to 2 metres tall and 1.5 to 2 metres wide, and it holds that size without constant cutting back. Growth is around 60 to 90 centimetres a year, so it reaches useful height within two or three seasons. Trimming keeps it lower and denser where a hedge under 1.5 metres is wanted.

How far apart should I plant it for a hedge?

Plant 1 to 1.5 metres apart for a dense informal screen, or 80 centimetres apart for a tighter formal hedge that closes over sooner. For mass planting on a bank or in a garden bed, 1 metre centres give complete coverage within a couple of seasons. Stagger two rows where a solid block is needed.

Is it suitable for coastal positions?

Yes. Casuarina glauca is one of the more salt tolerant Australian natives, growing naturally on estuarine flats and behind foredunes. This cultivar takes salt-laden wind, sandy soil and reflected heat without burning. It is a sound choice for front line coastal gardens where most ornamental hedging plants fail within a season or two.

Is it frost tolerant?

Yes. It survives heavy and frequent frost without damage, which sets it apart from many salt tolerant shrubs. That combination of frost hardiness and coastal tolerance means it can be used in cold inland districts and on the beachfront alike. No winter protection is needed once the plant has been in the ground a season.

Can it grow in pots?

Yes. The compact size and fine foliage suit large containers, and it is often used in pairs beside entries or along balconies and rooftop terraces. Use a free-draining native potting mix and a pot of at least 50 centimetres. Water regularly through summer and feed with a low phosphorus native fertiliser.

How do I care for Green Waves Sheoak?

Water through the first summer, after which it largely looks after itself. Use a low phosphorus native fertiliser once in spring if growth needs pushing, and mulch to suppress weeds. Trim lightly two or three times a year for a formal shape, cutting into the soft outer growth rather than into bare old wood.

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.

View full details

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Enriched Planting Mix (AO Certified)

$21.95

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Uses in my Garden

Screening or Privacy
Shrubs
Rural Property Planting
Revegetation or Regeneration
Plant in Pots (or) Suitable for Pots
Underplanting

Casuarina 'Green Waves' works in an:

Australian Native Garden – celebrates local plants with natural character.
Coastal Garden – relaxed, seaside feel with hardy, textural plants.
Low-maintenance Garden – resilient choices for easy care and year-round appeal.
Modern Garden – sleek, minimal, and design-led planting.
Formal Garden – structured, symmetrical design with clipped shapes.

Is Casuarina 'Green Waves' Evergreen or Deciduous?

Casuarina 'Green Waves' is an Evergreen (foliage year round) Tree

Mature Height & Width

Mature Height: 1.5m to 2m (approx.)

Mature Width: 1.5m to 2m

Casuarina 'Green Waves' is expected to grow 60cm to 90cm per year (approx.).

Growth Rate of Casuarina 'Green Waves'

Casuarina 'Green Waves' is expected to grow 60cm to 90cm per year (approx.).

They are considered to have a:

Medium Growth Rate
Fast Growth Rate

Frost Tolerance & Ideal Climate to plant Casuarina 'Green Waves'

Is Casuarina 'Green Waves' frost tolerant?

Casuarina 'Green Waves' is Frost Hardy – Survives heavy and frequent frost without damage.

Does Casuarina 'Green Waves' Flower?

Casuarina ‘Green Waves’ produces very small, understated red to brown flowers along its fine, needle-like branchlets from late winter into spring. While subtle, these blooms precede the formation of its woody cone-like fruit and contribute to its natural seasonal rhythm.

Does Casuarina 'Green Waves' flower?

No - Doesn't Flower

Flowering Period:

Not Applicable

Flower Type:

Not Applicable

Flower Colour:

Not Applicable

Is Casuarina 'Green Waves' an Australian Native Tree?

Yes

Casuarina 'Green Waves' is Native to A selected cultivar of Casuarina (Australian native she-oaks), originating from coastal and inland regions of eastern and southern Australia.

What is the Wildlife Value of Casuarina 'Green Waves' ?

Its dense, feathery foliage provides valuable shelter for small birds, while its seed cones attract native parrots and other seed-eating species. The flowers also support native bees and beneficial insects, making it a strong contributor to garden biodiversity.

How much Sunlight does Casuarina 'Green Waves' need?

Casuarina 'Green Waves' will thrive best in:

Full Sun

Preferred Soil?

Casuarina ‘Green Waves’ performs best in well-drained sandy or loam soils and tolerates slightly acidic to slightly alkaline conditions. It may struggle in heavy clay or waterlogged ground unless improved with organic matter and coarse material to enhance drainage. Keep soil evenly moist during establishment, then transition to deep, occasional watering as it matures and develops its characteristic high drought resilience.

Is Casuarina 'Green Waves' Drought Tolerant?

Is Casuarina 'Green Waves' Drought tolerant?

As a young tree it requires regular watering, but once established Casuarina ‘Green Waves’ develops excellent drought tolerance. It thrives in hot, dry and coastal environments, maintaining its soft, flowing habit with minimal supplementary watering.

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How To Plant Your Casuarina 'Green Waves'

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 'Green Waves'

Hedging and screening: 1 to 1.5 metres apart for a dense informal screen, or 80 centimetres apart for a tighter formal hedge.

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

Casuarina 'Green Waves' is expected to grow 60cm to 90cm per year (approx.).

Medium Growth Rate
Fast Growth Rate

Long Term Care For Your Casuarina 'Green Waves'

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: Tip prune in late winter and again in summer to build dense growth. For a formal hedge, light shaping two to three times a year keeps lines crisp.

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 'Green Waves' in Different Soil

Casuarina 'Green Waves' 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.

Frequently Asked Questions

Q: How much sun does Casuarina 'Green Waves' need?
A: It performs best in full sun to part shade, allowing flexibility in garden placement.

Q: Is Casuarina 'Green Waves' suitable for small gardens?
A: Yes, with its compact growth habit, it is ideal for small to medium-sized gardens and can be used effectively in confined spaces.

Q: What maintenance does Casuarina 'Green Waves' require?
A: It requires very little maintenance, mainly occasional watering during prolonged dry periods and minimal pruning to maintain shape if desired.

Casuarina 'Green Waves' is an excellent choice for gardeners looking for a durable, attractive, and easy-care addition to their landscape