Coastal Living with Australian Native Trees: 6 Picks for Beach Gardens

Salt spray, strong winds and sandy soil are tough on most trees but right at home for Aussie natives. Banksia, Westringia, Acacia Waterfall, Leptospermum and Red Spotted Gum lead the coastal palette. Here is how to plant a garden that thrives by the sea.

Australian NativesBanksiaBeach GardenCoastalNative Trees

Coastal gardens are tough on most trees. Salt spray, relentless wind, sandy soil and salty groundwater knock out anything that isn't built for it. Australian natives, on the other hand, evolved in these conditions and look better the closer you plant them to the sea.

The six native trees and shrubs below are the ones we recommend most often for coastal blocks. Each is salt-tough, low maintenance, and supports native wildlife in ways imported trees can't.

Banksia integrifolia — the classic salt-tolerant Coast Banksia. Silver-backed leaves that flash in the wind and yellow autumn-winter flowers that feed honeyeaters for months.
Banksia serrata — the Old Man Banksia. Deeply furrowed character bark, large serrated leaves and grey-yellow flower cones. A sculptural feature tree for direct coastal exposure.
Acacia cognata 'Waterfall' Standard — cascading lime-green foliage on a clean trunk. Suited to small coastal courtyards with yellow ball flowers in late winter.
Westringia fruticosa — the most reliable low coastal hedge in the native palette. Fine silver-grey foliage, white flowers most of the year, bulletproof salt tolerance.
Leptospermum 'Starry Night' — deep purple-bronze tea tree with masses of star-shaped white spring flowers. Tonal depth for coastal compositions.
Eucalyptus mannifera — the Red Spotted Gum. A smaller-scale eucalypt with mottled bark, suited to suburban coastal blocks where a full Spotted Gum would be too much.

How to choose a coastal native tree

Direct exposure or sheltered

Banksia integrifolia and Westringia fruticosa handle direct salt spray. Banksia serrata and Eucalyptus mannifera prefer slightly sheltered positions just behind the front line. Leptospermum and Acacia 'Waterfall' do well in the second row.

Decide feature or hedge

For a hedge: Westringia fruticosa is the standard low coastal hedge. For a feature: Banksia integrifolia, Banksia serrata, Eucalyptus mannifera. For accents: Acacia 'Waterfall' Standard, Leptospermum 'Starry Night'.

Layer texture, not species

The strongest coastal compositions layer texture. A Banksia or Eucalyptus feature, a Leptospermum mid-tone, a Westringia low hedge underneath. Silver foliage links the layers together and reads well against blue water.

Sandy soil preparation

Sandy soils drain fast. Add coarse compost to the planting hole, mulch heavily afterwards, and water deeply through the first summer to put roots down.

Stake young trees

Coastal winds need firm staking through the first year to develop trunk strength. Two stakes outside the rootball with soft ties that allow flex.

Native feeding rule

Use a native-specific slow-release fertiliser in spring. Skip phosphorus-heavy fertilisers like blood and bone — they damage Banksia and many other natives.

1. Banksia integrifolia (Coastal Banksia)

Coastal Banksia is the iconic salt-tolerant Aussie native. Soft silver-green undersides, yellow flower spikes and a tough constitution built for windy coastal sites.

Type: Coastal native feature tree
Height: 8-15m
Width: 4-6m
Growth rate: Moderate to fast
Foliage: Evergreen, deep green above with silver undersides that flash in the wind
Flowers: Pale yellow upright flower spikes through autumn and winter, attracting honeyeaters and lorikeets
Form: Upright spreading with attractive gnarled trunk on mature trees
Conditions: Full sun. Excellent salt and wind tolerance. Sandy or well drained soil.
Maintenance: Low. Light prune after flowering. Avoid phosphorus fertilisers.
Best for: Coastal gardens, sand dunes, exposed sites, wildlife habitat

Why choose it

Few trees handle direct coastal exposure as gracefully. The autumn-winter flowers feed birds when most other natives are dormant.

Perfect pair

Pair with a Westringia fruticosa low hedge underneath for textural and tonal harmony.

Tips for planting

Mulch with coarse organic mulch but keep clear of the trunk. Never use blood and bone or high-phosphorus fertilisers.

The first tree to plant on a coastal block.

Shop Banksia integrifolia

2. Banksia serrata (Old Man Banksia)

Old Man Banksia has the most characterful trunk of any native tree. Deeply furrowed bark, serrated leaves and large grey-yellow flower cones.

Type: Coastal native feature tree
Height: 6-12m
Width: 4-6m
Growth rate: Slow to moderate
Foliage: Evergreen, large serrated dark green leaves
Flowers: Large grey-green to pale yellow flower cones through summer and autumn
Form: Spreading with deeply gnarled trunk that develops dramatic character with age
Conditions: Full sun. Excellent salt tolerance. Sandy or well drained soil.
Maintenance: Very low. Avoid phosphorus fertilisers.
Best for: Coastal feature planting, wildlife gardens, sculptural focal points

Why choose it

Old Man Banksia is a slow but spectacular feature. The trunk alone is worth planting it for.

Perfect pair

Pair as a single specimen behind a Westringia low hedge so the sculptural trunk reads against a calm foreground.

Tips for planting

Plant in autumn for best establishment. Water deeply through the first two summers, then leave it alone.

The most characterful native you can plant by the sea.

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3. Acacia cognata 'Waterfall' Standard (Waterfall Wattle Standard)

Waterfall Wattle on a standard is the cascading native feature for small coastal gardens. Soft weeping foliage on a clean trunk, low maintenance and full of texture.

Type: Compact native feature tree
Height: 2-3m
Width: 2-3m
Growth rate: Fast
Foliage: Evergreen, fine lime-green weeping foliage
Flowers: Small yellow ball flowers in late winter and early spring
Form: Cascading mop-head grafted onto a clear straight trunk
Conditions: Full sun. Drought and frost tolerant. Coastal hardy in moderately exposed positions.
Maintenance: Low. Light shape after flowering.
Best for: Small coastal courtyards, entry features, pots, sculptural focal points

Why choose it

Cascading native foliage on a clean trunk is unusual and beautiful. Works as a feature where space is tight.

Perfect pair

Pair as a single feature behind a Westringia low hedge for a calm refined entry composition.

Tips for planting

Stake firmly for the first year. Water through the first summer to establish roots.

The native cascading feature tree for compact coastal gardens.

Shop Acacia cognata 'Waterfall' Standard

4. Westringia fruticosa (Coastal Rosemary)

Westringia fruticosa is the hardiest small native hedge for coastal Australia. Fine silver-grey foliage, soft white flowers and bulletproof salt tolerance.

Type: Coastal native hedge or border
Height: 1-1.5m, can be pruned to desired height
Width: 1-1.5m
Growth rate: Moderate
Foliage: Evergreen, fine grey-green needle-like foliage
Flowers: Small white flowers through most of the year
Form: Rounded dense habit
Conditions: Full sun. Excellent salt, wind and drought tolerance. Almost any well drained soil.
Maintenance: Low. Trim 1-2 times yearly to maintain shape.
Best for: Low coastal hedges, borders, edging, ground-level structure

Why choose it

Nothing beats Westringia for tough low-hedge coastal performance. The silver foliage pairs with almost any larger feature.

Perfect pair

Pair as a low foreground hedge beneath a single Banksia integrifolia or Old Man Banksia feature.

Tips for planting

Plant 60-80cm apart for a dense hedge. Trim lightly and often rather than heavily and rarely.

The most reliable low coastal hedge in the Australian native palette.

Shop Westringia fruticosa

5. Leptospermum obovatum 'Starry Night' (Starry Night Tea Tree)

Starry Night is the dark-foliaged tea tree with star-like white flowers. Compact, fast and coastal hardy. A natural choice for textured coastal planting.

Type: Coastal native shrub or small tree
Height: 2-3m
Width: 1.5-2m
Growth rate: Fast
Foliage: Evergreen, deep purple-bronze fine foliage
Flowers: Masses of small white star-shaped flowers in spring
Form: Compact rounded habit
Conditions: Full sun. Coastal hardy. Tolerates a range of soils.
Maintenance: Low. Light prune after flowering.
Best for: Coastal informal screens, mixed native planting, contrast foliage

Why choose it

The dark foliage gives coastal planting tonal depth that softer-leaved natives can't. Pairs beautifully with silver Westringia and Banksia.

Perfect pair

Pair as a backdrop behind a Westringia low hedge for foliage contrast and seasonal flower interest.

Tips for planting

Mulch and water through the first summer. Avoid heavy pruning.

The deep-toned tea tree that gives coastal planting visual weight.

Shop Leptospermum obovatum 'Starry Night'

6. Eucalyptus mannifera ssp maculosa (Red Spotted Gum)

Red Spotted Gum is the smaller-scale eucalypt for coastal sites. Mottled bark, salt tolerance and a clean upright form that suits suburban coastal blocks.

Type: Coastal native feature tree
Height: 10-15m
Width: 5-8m
Growth rate: Fast
Foliage: Evergreen, fine lance-shaped leaves
Flowers: Cream flowers in spring, attracting birds and bees
Form: Upright with clean trunk and high foliage. Bark sheds in patches revealing cream, pink and grey.
Conditions: Full sun. Salt and drought tolerant. Frost hardy.
Maintenance: Low. No pruning needed.
Best for: Coastal feature planting, mid-scale gardens, street trees

Why choose it

Smaller than Spotted Gum but with the same beautiful mottled bark. Better suited to suburban coastal blocks.

Perfect pair

Pair with Westringia underneath for the classic native coastal layered look.

Tips for planting

Stake firmly through the first year on exposed sites. Water deeply through the first summer.

The right eucalypt scale for a coastal suburban garden.

Shop Eucalyptus mannifera ssp maculosa

Compare at a glance

Cultivar	Height	Width	Form	Foliage	Best if you…
Banksia integrifolia Coastal Banksia	8-15m	4-6m	Upright spreading with attractive gnarled trunk on mature trees	Evergreen, deep green above with silver undersides that flash in the wind	Coastal gardens, sand dunes, exposed sites, wildlife habitat
Banksia serrata Old Man Banksia	6-12m	4-6m	Spreading with deeply gnarled trunk that develops dramatic character with age	Evergreen, large serrated dark green leaves	Coastal feature planting, wildlife gardens, sculptural focal points
Acacia cognata 'Waterfall' Standard Waterfall Wattle Standard	2-3m	2-3m	Cascading mop-head grafted onto a clear straight trunk	Evergreen, fine lime-green weeping foliage	Small coastal courtyards, entry features, pots, sculptural focal points
Westringia fruticosa Coastal Rosemary	1-1.5m, can be pruned to desired height	1-1.5m	Rounded dense habit	Evergreen, fine grey-green needle-like foliage	Low coastal hedges, borders, edging, ground-level structure
Leptospermum obovatum 'Starry Night' Starry Night Tea Tree	2-3m	1.5-2m	Compact rounded habit	Evergreen, deep purple-bronze fine foliage	Coastal informal screens, mixed native planting, contrast foliage
Eucalyptus mannifera ssp maculosa Red Spotted Gum	10-15m	5-8m	Upright with clean trunk and high foliage. Bark sheds in patches revealing cream, pink and grey.	Evergreen, fine lance-shaped leaves	Coastal feature planting, mid-scale gardens, street trees

How to plant and care for them

Pick the position

Direct exposure: Banksia integrifolia, Westringia. Sheltered second row: Banksia serrata, Eucalyptus mannifera, Leptospermum, Acacia 'Waterfall'.

Prepare the planting hole

Dig the hole twice the width of the rootball and the same depth. Mix the original sandy soil with coarse compost. Loosen the sides so roots can move outward.

Plant level and water in deeply

Set the rootball so the top sits level with surrounding soil, never deeper. Soak the rootball thoroughly so the new soil settles around the roots.

Mulch out to the drip line

Lay 75 to 100mm of organic mulch from 50mm clear of the trunk out to the drip line. Mulch keeps roots cool and holds moisture in sandy soils.

Stake firmly

Coastal winds need firm staking through the first year. Two stakes outside the rootball with soft ties that allow the trunk to flex. Remove once anchored.

Water deeply through the first two summers

Twice a week deep watering in warm weather, once a week in mild weather, through the first two summers. Sandy soils drink fast — deep soaking trains roots downward.

Native feeding only

A native-specific slow-release fertiliser in early spring is enough. Avoid phosphorus-heavy fertilisers.

Frequently asked questions

Which native is most salt tolerant?

Banksia integrifolia and Westringia fruticosa handle direct salt spray better than almost any other native.

Do coastal natives need fertiliser?

Lightly. Use a native-specific slow release product in spring. Avoid phosphorus-heavy fertilisers on Banksia.

Will native hedges grow in sandy soil?

Yes. Westringia, Syzygium and Waterhousea handle sandy soil with added compost and mulch.

The wrap up

The six coastal natives layer cleanly. Banksia integrifolia and Westringia fruticosa handle direct salt spray. Banksia serrata and Eucalyptus mannifera sit just behind. Acacia 'Waterfall' and Leptospermum 'Starry Night' add tonal accents.

Layer texture rather than species, link silver foliage through the planting, and the coastal garden will read calm and unmistakably Australian.