Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak

$145.00

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Size: 30cm/33cm

30cm/33cm

Current Stock Height Guides

*** Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons.No guarantee is giventhat 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 andis not grounds for return, refund, replacement, or compensation.

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About Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak

Casuarina glauca ‘Greenwave’ PBR is a dense evergreen Australian native screening plant valued for its fine textured foliage, upright growth habit, and strong wind-tolerant performance. The soft deep green branchlets create a refined architectural appearance while forming highly effective year-round screening and boundary structure in coastal and exposed landscapes.

It performs best in full sun and well-drained soils, adapting exceptionally well to sandy coastal conditions, salt-laden winds, difficult urban sites, and dry climates once established. Suited to temperate, Mediterranean, subtropical, and coastal regions, this variety develops excellent drought tolerance and dependable low-maintenance performance. Its naturally dense habit responds well to trimming where formal screening is required.

They look excellent when used for screening, windbreaks, boundary planting, and coastal landscape applications where evergreen structure and resilience are required. This variety is commonly specified for residential privacy planting, commercial landscapes, and exposed coastal sites requiring reliable low-maintenance screening.

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Key Information to Know

Evergreen / Deciduous

Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak is an Evergreen (foliage year round) Tree

Mature Height & Width

Mature Height: 4m - 8m

Mature Width: 2m - 4m

Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak is expected to grow 60cm - 1.2m per year under suitable conditions.

Frost Tolerance

Is Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak frost tolerant?

Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak is Frost Tolerant – Can handle light to moderate frost once established.

Flowering Information

Casuarina glauca ‘Greenwave’ produces small inconspicuous flowers during the warmer months, occasionally followed by decorative woody seed cones. While flowering is subtle, the plant is primarily valued for its fine-textured evergreen foliage and dense spreading growth habit.

Native Information

Is Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak an Australian Native? Yes

Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak is Native to Derived from Australian Casuarina glauca selections.

Wildlife Value

Its dense evergreen foliage provides valuable shelter and habitat for small birds and beneficial insects throughout the year. The spreading low-growing habit also contributes to biodiversity within native and coastal landscapes by creating protected ground-level habitat coverage.

Sunlight Information

Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak will thrive best in:

Full Sun

Preffered Soil

Casuarina glauca ‘Greenwave’ performs best in free-draining sandy or loam soils with a neutral to slightly acidic pH. It will also tolerate poorer soils, exposed coastal conditions and a range of challenging landscape environments provided drainage remains reliable. Avoid persistently wet or heavily compacted conditions unless significantly improved, as excess moisture can reduce root health and overall vigour. Keep soil lightly moist during establishment, then gradually reduce watering as the plant matures.

Botanical Information

Common Name: Greenwave Swamp Oak

Genus: Casuarina

Botanical Species: glauca cultivar

Family: Casuarinaceae

Botanical Name: Casuarina glauca ‘Greenwave’ PBR

Landscape Uses

Screening or Privacy
Windbreak

Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak works in an:

Coastal Garden – relaxed, seaside feel with hardy, textural plants.
Contemporary / Architectural Garden – striking forms for bold design statements.
Australian Native Garden – celebrates local plants with natural character.

Planting, Spacing & Care

Plant in full sun for strongest growth performance.
Use free-draining soil conditions.
Water regularly during establishment.
Mulch lightly to retain moderate soil moisture.
Prune lightly if formal screening structure is desired.

Feature Planting: 3m - 5m
Screening: 1m - 2m
Windbreak Planting: 2m - 3m
Avenue Planting: 5m - 7m

Water deeply during extended dry periods while establishing.
Remove damaged or crowded growth if required.
Feed lightly during spring if additional growth support is needed.

Sandy soils: Supports drainage and coastal adaptability.
Clay soils: Adapts well provided drainage is reasonable.
Coastal soils: Performs reliably in exposed seaside conditions.

Casuarina glauca ‘Greenwave’ – Greenwave Swamp Oak is expected to grow 60cm - 1.2m per year under suitable conditions.

Fast 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

Sydney & Central Coast
Northern NSW (Byron, Coffs, Armidale)
Adelaide Metro & Coastal

Thrives in

Full Sun

Frost Tolerance

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

Drought Tolerance

As a young plant it benefits from regular watering to establish a healthy root system, particularly during warmer weather. Once established, ‘Greenwave’ shows excellent drought tolerance and performs reliably through extended dry periods with minimal supplementary watering.