Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine

$270.00

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Size: 40cm/45L

40cm/45L

Current Stock Height Guides

40cm/45L: 1.5m – 2m 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: 5m to 12m

Mature Width: 3m to 5m

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine is expected to grow 30cm to 50cm per year (moderate).

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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About Your New Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine

Callitris rhomboidea, the Oyster Bay Pine or Port Jackson Pine, is an Australian native conifer with a dense, narrow, pyramidal crown. The foliage is fine and scale like, deep green, and can take on a bronze cast through cold weather. Small woody cones sit tight against the branches and persist for years.

It wants full sun and soil that drains, including sandy and rocky ground, and it is at home on coastal and inland sites alike. Once established it is both drought and frost tolerant. Growth is moderate at 30 to 50 centimetres a year, and it holds its form without any pruning.

Plant it as a feature, in a row as a windbreak, or in loose groups for screening on a rural block. It suits revegetation work and civic planting where a hardy native conifer with year round density is needed. Upkeep after the first two summers is close to nothing, which matters on large jobs.

Frequently Asked Questions

About Oyster Bay Pine

What is Callitris rhomboidea?

Callitris rhomboidea is an Australian native conifer known as Oyster Bay Pine or Port Jackson Pine, found naturally along the east coast and in Tasmania. It forms a dense, narrow, pyramidal tree with fine scale like foliage and small woody cones. Being a conifer it produces cones rather than flowers, and it is evergreen.

How big does Oyster Bay Pine grow?

In cultivation it typically reaches 5 to 12 metres tall and 3 to 5 metres wide, with the lower end of that range more common on exposed or dry sites. Growth stays upright and dense from the base, so it does not lift into a bare trunk the way many other conifers do.

How fast does it grow?

Moderate, about 30 to 50 centimetres a year once established. That is quicker than most native conifers but not fast, so plant advanced stock where screening is wanted sooner. Growth is steady rather than sporadic, and the tree keeps a tidy outline as it goes rather than needing corrective pruning later.

Is it drought tolerant?

Yes. It is a genuinely tough tree, native to dry sandy and rocky sites, and established specimens hold up through extended dry without supplementary water. Give it regular water through the first two summers to get roots down. Drainage matters far more than soil fertility, and heavy wet clay is the one situation to avoid.

Does it make a good windbreak or screen?

Yes, it is one of the better native options for both. Foliage is dense to ground level, so a row planted 3 metres apart forms a solid windbreak within a few years. For screening, plant 1 to 1.5 metres apart for a continuous face, or group three to five trees for a looser, natural effect.

Where does it grow best in Australia?

It grows well through temperate and warm temperate districts, coastal and inland, including Sydney, Melbourne, Adelaide and Tasmania. Coastal exposure and poor sandy soils are handled without fuss, and frost is no problem once established. It is less suited to wet tropical conditions and to heavy soils that stay saturated through winter.

How do I care for an Oyster Bay Pine?

Water deeply through the first two summers and mulch the root zone, keeping mulch off the trunk. After that it needs almost nothing. No pruning is required to hold the form, though lower branches can be lifted if clearance is wanted. Avoid high phosphorus fertilisers and heavy irrigation, since both do more harm than good.

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

Feature Tree
Screening or Privacy
Windbreak
Council or Civic Landscapes

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine works in an:

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

Is Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine Evergreen or Deciduous?

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine is an Evergreen (foliage year round) Tree

Mature Height & Width

Mature Height: 5m to 12m

Mature Width: 3m to 5m

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine is expected to grow 30cm to 50cm per year (moderate).

Growth Rate of Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine is expected to grow 30cm to 50cm per year (moderate).

They are considered to have a:

Medium Growth Rate

Frost Tolerance & Ideal Climate to plant Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine

Is Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine frost tolerant?

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine is Frost Tolerant – Can handle light to moderate frost once established.

Does Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine Flower?

Callitris rhomboidea produces very small, inconspicuous male and female cones rather than showy flowers. These subtle reproductive structures sit close to the branchlets and form part of its natural seasonal cycle without adding a visible floral display.

Does Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine flower?

No - Doesn't Flower

Flowering Period:

Not Applicable

Flower Type:

Not Applicable

Flower Colour:

Not Applicable

Is Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine an Australian Native Tree?

Yes

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine is Native to Southeastern Australia, including Tasmania, Victoria, New South Wales, and South Australia, where it grows naturally in coastal and inland forests.

What is the Wildlife Value of Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine ?

Its dense, fine foliage provides excellent shelter for small birds and lizards, while its seed cones are a food source for native parrots and seed-eating birds. The tree’s structure also supports beneficial insects, enhancing biodiversity in low-maintenance and native garden settings.

How much Sunlight does Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine need?

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine will thrive best in:

Full Sun

Preferred Soil?

Callitris rhomboidea 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 areas unless significantly improved with organic matter and coarse material to enhance drainage. Keep soil evenly moist during establishment, then reduce watering as the tree matures and develops its characteristic high drought resilience.

Is Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine Drought Tolerant?

Is Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine Drought tolerant?

As a young tree it requires regular watering, but once established Callitris rhomboidea develops excellent drought tolerance. It thrives in dry, coastal and inland environments and maintains its compact evergreen form with minimal supplementary watering.

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How To Plant Your Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine

Site: Choose a well-drained position in full sun with good air movement and room for the canopy to develop.

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

Hole: Dig twice as wide as the root ball and the same depth, avoiding any low spot where water might pool.

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

Recommended Planting Spacing For Your Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine

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

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.

Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine is expected to grow 30cm to 50cm per year (moderate).

Medium Growth Rate

Long Term Care For Your Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine

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 centimetre layer of organic mulch or pine bark over the root zone, keeping it 5 centimetres clear of the trunk to avoid waterlogging at the base.

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 Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine in Different Soil

Callitris rhomboidea 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 tall does Callitris rhomboidea grow?
A: Mature trees reach 5–12 metres tall and 3–5 metres wide.

Q: Is it drought tolerant?
A: Yes, it’s highly drought tolerant once established.

Q: Can it be used for screening?
A: Yes, it forms a dense, evergreen screen or windbreak.

Q: Is it suitable for coastal conditions?
A: Yes, it performs extremely well in coastal and sandy environments.

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Callitris rhomboidea – Oyster Bay Pine / Port Jackson Pine