How to Choose the Right Plants for Your Garden in Australia

Stop choosing plants because you like them.

There.

Possibly not the opening sentence you expected from a nursery that would quite like to sell you some plants.

But hear me out.

Most garden failures don't start when the plant dies.

They start twenty minutes earlier at the nursery when somebody picks up a beautiful plant and thinks:

“Where could I put this?”

Wrong question.

Walk into your garden first.

Look at the space.

Then ask:

“What plant would actually be happy here?”

That tiny change completely flips the way you choose plants.

Instead of buying something gorgeous and attempting to negotiate with it for the next five years, you're choosing a plant whose natural behaviour already matches the job you need done.

And gardening gets considerably easier.

Don't start with the plant

Start with the spot.

Before choosing anything, you need to know what you're dealing with.

How much sun does it receive?

What sort of soil is there?

Does water drain quickly or sit after rain?

Is the position exposed to wind?

Is there reflected heat from paving, walls or fences?

Are there established tree roots?

How much physical space is available?

And most importantly:

What do you actually need the plant to do?

Screen the neighbours?

Cover bare soil?

Stay below a window?

Soften a retaining wall?

Survive beside a driveway?

Create shade?

Grow underneath a tree?

Fill a narrow garden bed?

Stop you looking at the Colorbond fence while you're eating breakfast?

That's where plant selection begins.

How much sun does the garden really get?

“Full sun” is probably one of the most casually used phrases in gardening.

People look at a reasonably bright garden and say:

“Yep. Full sun.”

But actually watch the position.

How many hours of direct sunlight hit it?

And when?

Morning sun and western afternoon sun can create very different growing conditions.

A garden beside a western wall may experience intense afternoon sun plus reflected heat.

A position underneath an open-canopied tree may receive bright filtered light all day without much direct sun.

A narrow bed between two buildings may look bright while receiving very little direct sunlight.

Don't choose plants based on whether the garden feels sunny to you.

Watch where the sun actually goes.

Full sun doesn't mean the same thing everywhere in Australia

This is important.

Six hours of sun in a mild coastal climate isn't necessarily the same experience as six hours of sun in an extremely hot inland location.

Temperature, humidity, wind, reflected heat and water availability all affect how a plant experiences that position.

This is why gardening labels are a starting point, not a legally binding agreement between you and the plant.

Understand your microclimate.

Your backyard has one.

In fact, it probably has several.

Then look at the soil

You don't need to become a soil scientist before planting a Gardenia.

But you should know the basics.

Is your soil sandy?

Heavy clay?

Loamy?

Compacted?

Does it drain freely?

Does it remain wet after rain?

Does water bead on the surface and run away?

Dig a hole.

Seriously.

You can learn more from digging twenty centimetres into your garden than from staring at the surface for twenty minutes.

Look at the soil.

Feel it.

Check the moisture.

See whether roots are already occupying the area.

Fill a small test hole with water and observe what happens if drainage is a concern.

The plant is going to spend its entire life in this stuff.

It's worth having a look.

Stop assuming clay soil is bad soil

Clay gets an unnecessarily terrible reputation.

Clay soils can hold water and nutrients extremely well.

The problem comes when they're compacted, poorly structured or remain waterlogged for plants that require better drainage.

Likewise, sandy soil isn't automatically wonderful because it drains.

It can dry rapidly and may hold fewer nutrients.

There is no universally perfect garden soil.

There is soil that suits the plant you're trying to grow.

That's what matters.

What happens there after heavy rain?

This is one of my favourite ways to choose plants.

Wait for rain.

Then go outside.

Where does the water travel?

Where does it pool?

What dries immediately?

What is still wet tomorrow?

Those patterns are giving you a map of the garden.

That soggy depression might be terrible for a plant that hates wet feet.

But it could be brilliant for moisture-loving sedges and rushes.

The dry bank that cooks all afternoon might destroy something that prefers moist sheltered conditions.

But it could be exactly where a tough sun-loving groundcover belongs.

The difficult part of your garden may only be difficult because you're trying to grow the wrong plants there.

Decide what JOB the plant needs to do

This is where plant shopping gets much easier.

Don't just make a list of plants you like.

Make a list of jobs.

For example:

I need privacy along this fence.

I need something under 800mm below this window.

I need a groundcover across this bank.

I need something tough beside the driveway.

I need a low border along this path.

I need plants that can cope with wet soil.

I need something underneath these trees.

I need a narrow screen because this garden bed is only one metre wide.

Now we can actually choose intelligently.

Because “I need a plant” isn't enough information.

Plants are tools.

Different plants solve different garden problems.

Mature size matters far more than pot size

This might be the single biggest thing we wish customers would look at.

The plant you're buying is not finished.

That tiny tube may become one metre wide.

That cute little shrub may eventually become three metres tall.

That groundcover may spread considerably further than you'd expect from something currently fitting in one hand.

Choose plants according to what they're going to become.

Not what they look like on the nursery bench.

If the mature plant is naturally close to the size you need, maintenance becomes much easier.

If you want a one-metre hedge, choosing a plant that naturally wants to become four metres tall means you've signed yourself up for a relationship with the hedge trimmer.

Forever.

This is the secret to a genuinely low-maintenance garden

People often ask us for plants that “don't need maintenance.”

Those plants are called plastic.

Living plants grow.

They shed leaves.

They flower.

They respond to weather.

They occasionally need pruning.

Low maintenance doesn't mean nothing ever happens.

It means choosing plants whose natural behaviour is reasonably close to what you want them to do.

Need something low?

Choose something naturally low.

Need something narrow?

Choose something naturally narrow.

Need something to spread?

Choose a groundcover.

Need a compact hedge?

Choose a compact shrub.

Don't buy an enormous plant and spend the next decade fighting its genetics.

The plant will probably win.

Think about width, not just height

People are obsessed with height.

Especially when buying screening plants.

“How tall does it grow?”

Great question.

Now ask:

“How wide does it grow?”

A screening plant that becomes four metres wide may be fantastic on a large rural property and completely ridiculous beside a narrow suburban driveway.

Width determines how much garden the plant eventually occupies.

It affects spacing.

It affects maintenance.

It affects whether you can still use the path.

And it affects how many plants you actually need.

Sometimes the best privacy plant isn't the fastest or tallest.

It's the one whose mature dimensions fit the space.

Groundcovers aren't just tiny plants

Groundcovers have a job.

They cover ground.

Which sounds obvious, but we often see them planted like little individual shrubs with enormous gaps between them.

When choosing a groundcover, mature spread can be more important than height.

A good ground layer can help shade soil, soften edges, reduce exposed mulch, connect taller plants visually and leave less open space for weeds to exploit.

That doesn't mean a groundcover makes a garden magically weed-free.

If only.

But covering soil with plants is one of the most useful tools we have.

Don't choose every plant for its flowers

This may be slightly controversial coming from people who sell flowering plants.

But flowers are temporary.

Foliage has to live there all year.

So when choosing plants, look at the leaves.

Colour.

Size.

Shape.

Texture.

Gloss.

Movement.

Density.

A garden containing grey-green Westringia, fine Lomandra foliage, deep green shrubs and a low spreading groundcover can look beautiful before a single flower opens.

Then the flowers become the bonus.

If the only interesting thing about your garden is flowering for three weeks in October, you've got eleven other months to deal with.

Green is not one colour

Once you start noticing this, garden design gets much more fun.

Lime green.

Deep green.

Blue-green.

Silver-green.

Olive.

Grey-green.

Glossy green.

Plants can create enormous colour contrast without flowering.

Put pale foliage against dark foliage and both become more noticeable.

Put fine foliage beside broad leaves and suddenly you've created texture.

This is how gardens remain interesting year-round.

Think in layers

Beautiful gardens rarely exist at one height.

Look at natural vegetation.

There are taller plants.

Shrubs.

Grasses.

Low plants.

Groundcovers.

Different shapes overlap and connect.

Now look at a brand-new garden where twelve shrubs have been planted at equal distances through fresh mulch.

That's why it looks new.

Everything is sitting on the same visual plane.

When choosing plants, think about the finished layers.

Canopy or taller screening where appropriate.

Shrubs through the middle.

Grasses and strappy plants.

Low shrubs.

Groundcovers underneath.

You don't need every possible layer in every garden.

But varying height and habit creates depth.

Repetition is your friend

This is where people get nervous.

“I already have one of those.”

Excellent.

Maybe you need six more.

😂

Professional-looking gardens often use fewer plant varieties in greater numbers.

Repetition gives the eye something to follow.

One Lomandra is a plant.

A repeated line or drift of Lomandras becomes part of the design.

One groundcover fills a patch.

Repeating that groundcover through the garden connects different areas together.

You don't need one of everything.

In fact, one of everything is an excellent way to make a garden look like the clearance bench at a nursery.

Choose a smaller palette and repeat it.

Odd numbers aren't a law

You've probably heard that plants should be planted in groups of three, five or seven.

That can work beautifully because odd-numbered groups often feel less rigid and can be easier to arrange naturally.

But it isn't horticultural law.

Formal gardens may use pairs and symmetry brilliantly.

Large landscapes might use fifty of one plant.

Small spaces might need one.

The useful idea is simply:

Think in groups and masses rather than automatically treating every plant as an individual specimen.

Choose plants for your climate

Australia is not one gardening zone.

A plant that thrives in humid coastal NSW may behave completely differently in a cold inland climate.

Frost matters.

Humidity matters.

Rainfall matters.

Summer heat matters.

Coastal exposure matters.

So does the amount of water you're realistically willing or able to provide.

Before buying, check whether the plant suits your broader climate as well as the specific position in the garden.

“Australian native” doesn't answer the question

We love Australian natives.

But “native” is not a growing condition.

Australia contains tropical rainforest, alpine country, desert, wetlands, coastal heath, temperate forests and enormous variations in between.

A plant being native to Australia does not automatically mean it loves drought.

It doesn't automatically mean it wants full sun.

It doesn't automatically mean it hates fertiliser.

And it doesn't mean it will thrive everywhere in Australia.

Choose natives the same way you should choose every plant:

Match the plant to the position.

Consider frost before planting

If your area experiences frost, check the plant's tolerance.

And remember that gardens contain microclimates.

A protected position near a building can behave differently from an exposed low point where cold air settles.

Young plants may also be more vulnerable than established ones.

If frost is a regular part of your winter, make it part of the selection process rather than an unpleasant surprise in July.

Coastal gardens need another layer of thinking

Living near the coast can mean salt-laden winds, strong exposure, sandy soils and intense sun.

Not every plant enjoys that.

Choose species and varieties known to tolerate coastal conditions rather than repeatedly replacing plants that don't.

And remember that “coastal” can describe very different situations.

A sheltered garden five kilometres from the ocean isn't the same as a front garden being blasted by salt wind across the road from the beach.

Again:

Microclimate.

Don't forget wind

Wind increases moisture loss from leaves.

It can damage soft foliage.

It can physically rock poorly established plants.

And exposed sites can be dramatically harsher than protected ones even when the sunlight and soil are identical.

If you have an exposed garden, toughness matters.

Plants with flexible growth, smaller leaves, tougher foliage or adaptations suited to exposed conditions can perform far better than something selected purely because it looked lovely in a photo.

What about plants underneath trees?

Under-tree planting is tricky because you're dealing with more than shade.

There is also root competition.

That enormous established tree already has a root system occupying the soil and accessing water and nutrients.

Your new little plant is moving into a very competitive neighbourhood.

Look for plants capable of handling the combination of shade, potentially dry conditions and root competition rather than simply searching for “shade plants.”

Dry shade is its own gardening problem.

Treat it that way.

Choose the right hedge before worrying about spacing

People often begin hedge planning with:

“How far apart should I plant them?”

We'd start one step earlier.

Which hedge plant actually fits the space?

How tall does it need to be?

How wide can it become?

Do you want formal or informal?

How much pruning are you prepared to do?

Do you want flowers?

Do you need something narrow?

What are the light conditions?

Once you have the right plant, spacing becomes much easier to determine.

Spacing the wrong plant perfectly still gives you the wrong hedge.

The same applies to screening plants

Privacy is one of the biggest reasons people buy plants.

But the fastest-growing screen isn't automatically the best screen.

Fast growth can mean more pruning.

A wide plant can steal enormous amounts of usable space.

A very tall plant might eventually create shade you didn't want.

Think about the finished screen.

Sometimes a slightly slower plant whose natural dimensions suit the site is the much smarter choice.

How many plants do you actually need?

This is where mature width and spacing matter.

If a plant matures to around one metre wide, you generally don't need to cram it in at 20-centimetre centres just because the plants currently look small.

Likewise, if you're trying to achieve rapid dense coverage, planting one groundcover every two metres might require considerable patience.

Spacing depends on mature size, growth habit and how quickly you want coverage.

The key is to plan for the finished plants, not today's pots.

Buying tubestock changes the economics of a garden

This is particularly useful when planting hedges, groundcovers, mass plantings and larger landscapes.

Tubestock allows you to buy younger plants at a lower cost per plant than advanced sizes and get those plants establishing in their permanent environment earlier.

They don't provide instant impact.

That's the trade-off.

But healthy young plants can establish beautifully, and when you're planting twenty, fifty or two hundred plants, the difference in cost becomes significant.

You're essentially choosing between paying more for size now or allowing the garden to grow into its size.

Neither is universally right.

It depends on the project.

Don't buy plants based only on the photo

Plant photos are dangerous.

😂

Of course we're going to show you the plant flowering beautifully.

Nobody is rushing outside to photograph it on a random Tuesday when it has finished flowering and is just quietly being foliage.

Look beyond the hero image.

What does the plant look like for the rest of the year?

Is it evergreen?

What is its natural shape?

How big does it become?

What happens after flowering?

Does it need pruning?

What conditions does it prefer?

A beautiful flower is a terrible reason to put the wrong plant in the wrong place.

Read the variety name

This matters enormously.

Don't just buy a Westringia.

Or a Lomandra.

Or a Dianella.

Or a Callistemon.

Different cultivars within those groups can have completely different growth habits.

One Westringia may make a compact shrub.

Another may spread low across the ground.

One Callistemon may become a substantial screen.

Another may remain a compact shrub.

One Lomandra may be broad and substantial.

Another may have much finer foliage or a smaller habit.

The variety often tells you what job the plant was selected to do.

Use that information.

Ask what maintenance you're prepared to do

This is the brutally practical part.

Do you enjoy pruning?

Do you want to hedge every six weeks?

Will you actually water pots through summer?

Do you want to deadhead flowers?

Do you enjoy gardening every weekend?

There is no wrong answer.

But be truthful.

The garden needs to fit your life.

If you'd rather spend Sunday morning drinking coffee than clipping forty metres of hedge, don't design a garden that requires forty metres of hedge clipping.

A beautiful garden you resent maintaining isn't a successful garden.

And please stop trying to fill every gap immediately

New gardens look sparse.

They're supposed to.

The plants are babies.

If you plant according to mature size, there will often be gaps initially.

Mulch them.

Wait.

Let the plants grow.

Otherwise you risk creating a gorgeous full garden in year one and an overcrowded wrestling match by year three.

Gardening requires the deeply inconvenient skill of imagining the future.

The easiest way to choose plants

If all of this feels like a lot, reduce it to six questions.

1. How much sun does the position actually receive?

2. What does the soil and drainage do?

3. What climate and exposure does the plant need to handle?

4. What job do I need the plant to do?

5. How big can it be when fully grown?

6. How much maintenance am I prepared to give it?

Answer those before you shop and you have eliminated an enormous number of unsuitable plants already.

Then you can choose from the ones that will actually work.

And THAT is when choosing plants becomes fun.

The Plant Hub rule

We'd much rather tell you not to buy a plant than sell you one that's wrong for your garden.

Because a plant dying doesn't help anybody.

You lose money.

We lose your trust.

And some poor unsuspecting Westringia has spent six miserable months wondering why it was planted in a swamp.

The best gardens aren't necessarily made from the rarest plants.

Or the most expensive plants.

Or the plants currently going viral on Instagram.

They're usually made from plants that are really well suited to where they've been put.

So next time you fall in love with something at the nursery, don't ask:

“Where can I squeeze this in?”

Go home.

Find the spot.

Understand the conditions.

Work out the job.

Then find the plant.

Right plant. Right place.

Gardening gets a whole lot easier after that.