What Are the Best Plants for a Low Hedge in Australia?
There is something incredibly satisfying about a good low hedge.
Not the enormous neighbour-blocking hedge that requires ladders, extension trimmers and a free Saturday twice a year. I mean the little ones: the neat green line along a path, the soft border across the front of a garden bed, the compact hedge beneath a window or the repeated row of shrubs that gives a front garden just enough structure to stop everything else looking like it arrived independently.
A low hedge can make an ordinary garden look remarkably polished, but there's one decision that determines whether it remains a lovely little feature or becomes a lifelong argument with a hedge trimmer.
You need to start with a plant that actually wants to be somewhere near the size you're asking it to remain.
It sounds obvious, yet an awful lot of hedges begin with a plant selected because it looked nice and small at the nursery. Of course it looked small. It was six months old and living in a pot.
The useful question isn't how big the plant is today.
It's what it's genetically programmed to become.
Choose well and a low hedge can be one of the easiest bits of the garden to maintain. Choose something naturally twice or three times the size you need and congratulations, you've accidentally taken up topiary as a hobby.
First, what do we actually mean by a low hedge?
There isn't an official horticultural height at which a hedge suddenly graduates from low to medium, but for practical purposes I'm talking about the sort of hedge we use for definition rather than privacy.
Perhaps you want something around knee height along a path. Maybe you're planting beneath windows and don't want foliage blocking the view. You might want to separate lawn from garden, define an entrance or give a loose planting some structure without building a green wall across the front of it.
That's a completely different job from screening the neighbour's shed.
Once you know the job, work backwards from the finished height and width you want. Measure the available bed, check how much room you can give the plants and think about how much clipping you're actually prepared to do.
And be realistic about that last one.
There is no shame whatsoever in wanting a hedge without wanting hedge maintenance to become your personality.
The best low hedge often isn't the fastest-growing one
“Fast growing” is one of the most requested things in a nursery.
Everyone wants the hedge yesterday.
I understand it. You've just planted a row of little plants with enormous gaps between them and suddenly the neighbour's garden has never looked more visible.
But speed has consequences.
A plant capable of putting on large amounts of growth quickly doesn't necessarily receive a memo when it reaches your preferred hedge height. It keeps growing. That's what you asked it to be good at.
For a large privacy screen, vigorous growth may be useful. For a little 50cm hedge, naturally compact growth can be far more valuable than sheer speed.
I'd rather wait a little longer for a plant that wants to live roughly where I've put it than spend the next ten years repeatedly cutting a much larger shrub back into submission.
The fastest hedge to establish isn't always the easiest hedge to own.
Grey Box™ Westringia is an obvious place to start
If I were choosing plants for a compact Australian hedge in a sunny position, Grey Box™ Westringia would be very high on the list where the site and climate suit it.
And this is exactly where cultivar selection matters.
People hear “Westringia” and picture the large shrubs they've seen in older gardens, but selected cultivars can have dramatically different growth habits. Grey Box was bred for a compact form, which makes it much more useful when you're trying to create structure at a smaller scale.
The fine grey-green foliage also gives you something slightly softer than the classic glossy green hedge. It works beautifully with native gardens, contemporary landscapes and mixed plantings where you want the hedge to provide a framework without looking overly formal.
You can clip it if you want a neater line, but I particularly like compact Westringias when they're allowed to keep just a little of their natural shape.
A hedge doesn't need to look like it was cut with a spirit level to create structure.
Goldie Box™ does the same job with a completely different effect
If Grey Box gives you cool grey-green foliage, Goldie Box™ Westringia takes the idea somewhere else entirely.
That golden-lime foliage can make a low hedge feel much lighter, particularly when the surrounding garden contains lots of deep greens.
This is something I think home gardeners massively underestimate when choosing hedge plants.
The hedge itself can be part of the colour scheme.
We tend to choose a green hedge and then rely on flowers to provide all the interesting bits. But foliage colour is there every day. A repeated band of gold, grey or variegated foliage can change the entire feel of a garden before a single flower opens.
Goldie Box is particularly useful when you want structure without adding another dark green block to the landscape.
And because it's repeated, that foliage colour has much more impact than one little golden shrub sitting by itself.
One Goldie Box is a plant.
A row of Goldie Box is a design decision.
Aussie Box™ deserves consideration if you like the classic clipped look
If your mental picture of a hedge is something neat, compact and deliberately formal, Aussie Box™ is another plant worth looking at.
This is the sort of plant that can give you that traditional low-hedge effect without automatically reaching for the same plant that has edged gardens for generations.
There's absolutely nothing wrong with a formal hedge, by the way.
We sometimes talk about naturalistic gardens as though we've collectively moved beyond clipping things into shapes. We haven't. A crisp low hedge beside looser planting can be spectacular because the contrast between the two makes both look more intentional.
The trick is knowing where to stop.
If everything in the garden is clipped into a ball, eventually the place starts looking like a collection of green meatballs.
Use the hedge as the disciplined bit.
Let something else misbehave behind it.
And yes, Japanese Box is still here
For all our enthusiasm about newer cultivars, Japanese Box — Buxus — remains popular for a reason.
It has a long history as a formal hedging plant, responds well to clipping and creates that classic small-leaf hedge people immediately recognise.
Sometimes the traditional answer is still a perfectly good answer.
The important thing is understanding what comes with the look you want. A formal Buxus hedge generally means clipping if you want to maintain that crisp shape. It isn't going to wake up every morning perfectly rectangular out of professional pride.
And depending on where you garden, pest and disease considerations may also influence your plant choice, so it's worth knowing what's relevant in your area rather than assuming the plant used in every English garden book is automatically the best choice for every Australian garden.
Garden style matters.
But site suitability gets the final vote.
Min-a-Min™ Murraya gives you a softer, glossier hedge
If you love the lush look of Murraya but don't need the large hedge traditionally associated with it, Min-a-Min™ Murraya is where things get interesting.
This is a compact form with beautiful glossy foliage, and it brings a completely different personality to a low hedge than Westringia.
Where Westringia can feel fine-textured and slightly more understated, Min-a-Min has that lush, polished green appearance that works beautifully around entrances, paths, front gardens and outdoor living areas.
Then you get the fragrant white flowers.
And this is where placement becomes fun.
A scented low hedge beside a path gives you something a hedge at the back boundary can't. You actually interact with it. You walk beside it. You brush past it. When it's flowering, the fragrance becomes part of entering the garden.
That's a much better use of a fragrant plant than hiding it somewhere nobody visits except when they're looking for the garden hose.
Nandina nana can create the effect of a hedge without really being a hedge
Now we get into something a little different.
Nandina nana isn't the plant I'd choose if you want a razor-straight formal hedge. That's not really its strength.
But if what you're actually trying to create is a low repeated border, it can be brilliant.
And that's an important distinction because sometimes people ask for a hedge when what they really want is repetition.
They want a line.
They want structure.
They want something consistent running through the garden.
That doesn't necessarily require every plant to join into one continuous clipped block.
Repeated Nandina can give you a softer, mounded effect with the added bonus of foliage that can shift through beautiful bronze and red tones in cooler weather.
You still get the visual rhythm of a hedge.
You just get considerably more personality with it.
Carissa Desert Star™ is another compact option worth thinking about
For a neat, glossy, evergreen look, Carissa Desert Star™ can also make a useful compact structural plant where conditions suit it.
This is where I would start comparing the feel of the plants rather than simply asking which one makes the best hedge.
Grey Box has fine grey-green foliage.
Goldie Box gives you golden tones.
Min-a-Min gives you glossy green.
Nandina brings seasonal foliage colour.
Carissa gives you another dense evergreen texture.
They can all create repetition, but the finished gardens won't look remotely the same.
That's why “best hedge plant” is never really one answer.
The better question is:
What do I want this hedge to do to the garden?
Under a window? Height becomes non-negotiable
Low hedges and windows are natural partners, but this is also where poor plant selection becomes painfully obvious.
If the bottom of your window is 80cm above the garden and you plant something whose natural ambition is two metres, you haven't created a low hedge.
You've created a pruning schedule.
Measure from the soil level to the bottom of the window before choosing the plant. Then allow yourself some margin.
Don't select something whose advertised mature height is exactly the maximum height you can tolerate and assume plants have read the catalogue.
Growing conditions vary. Plants are living things. They do not stop at precisely 79.8cm because the window begins at 80.
Give yourself room.
Your future hedge trimmer will thank you.
How far apart should you plant a low hedge?
This is where things get interesting because there isn't one hedge spacing that applies to everything.
Spacing depends on the mature width and growth habit of the actual cultivar, how quickly you want the plants to meet, how formal you want the finished hedge to be and whether you're comfortable allowing the plants enough room to develop naturally.
Planting incredibly close together can create a faster visual result, but it also means more competition as plants mature and can create unnecessary long-term density.
Planting too far apart leaves you with a row of individual blobs that never quite becomes the hedge you imagined.
So don't search “hedge spacing” and use the first number Google gives you.
Search the plant.
Look at its mature width.
Then work out what makes sense for that particular cultivar and the effect you're trying to create.
You're planting plants, not fence palings.
Straight line or staggered?
For a traditional low hedge, a single straight row is usually exactly what you want.
But if you've got a slightly wider bed and you're trying to create a broader mass rather than a formal hedge, staggered planting can create a very different effect.
This is particularly useful if you're using compact shrubs more as a repeated landscape element than as a clipped boundary.
Again, decide what you're actually trying to make.
“Hedge” can mean anything from a perfectly clipped 30cm border around a formal garden to a loose metre-wide ribbon of repeated shrubs.
Both can look fantastic.
They're just different gardens.
When should you start pruning a new hedge?
This is where people can become so focused on getting height that they forget about density.
Depending on the species and cultivar, appropriate early formative pruning can encourage branching and help create a denser plant rather than allowing a few long shoots to race upwards.
But pruning advice isn't universal.
Different plants respond differently, and the timing can depend on growth stage, season and what you're trying to achieve.
The important principle is that a hedge is built from branching, not just height.
If you want a dense finished hedge, think about the plant's structure from the beginning rather than waiting until it reaches the final height and then chopping the top off.
And always use clean, sharp tools.
If we're going to perform surgery, we can at least be civilised about it.
A low hedge doesn't need to run around the entire garden
This might be one of the easiest ways to make a garden feel more designed.
Use a short section of hedge.
That's it.
Perhaps it runs beneath the front windows.
Maybe it defines the path to the front door.
It could sit across the front of one garden bed, then disappear where the planting becomes more informal.
We sometimes assume that once we begin a hedge we're contractually obliged to continue until we reach the neighbour's property.
We're not.
A short repeated line can be enough to give the eye something solid to hold onto.
Then the garden can loosen up around it.
Mix formal structure with plants that misbehave
This is where low hedges really become useful.
Imagine a neat row of Grey Box with Purple Fusion™ Scaevola spilling through the garden behind it.
Or Min-a-Min with something strappy such as Little Jess™ Improved Dianella creating a completely different texture.
A compact hedge with Meema™ Hardenbergia spreading through a larger bed behind it.
A formal line of Japanese Box with flowering Salvias doing whatever Salvias feel like doing that week.
That contrast is what makes the garden interesting.
If every plant is loose, the garden can sometimes lack structure.
If every plant is clipped, it can feel rigid.
Put the two together and suddenly both make sense.
Tubestock makes a lot of sense when you're planting a hedge
Hedges require repetition.
Repetition requires numbers.
Numbers are exactly where tubestock starts making a lot of financial sense.
If you've got a ten-metre run to plant, buying enough advanced shrubs to create the entire hedge can become expensive very quickly. Starting with healthy young plants allows you to establish the whole design at once without necessarily spending the budget of a small municipal council.
The trade-off is patience.
You'll see gaps initially.
That's normal.
Plant according to the mature size and appropriate spacing, prepare the soil properly, mulch, water carefully during establishment and keep weeds from competing around the young plants.
Then let them grow.
The goal isn't to make planting day look like year five.
The goal is to make year five look fantastic.
Which low hedge would I choose?
I'd choose based on the garden rather than declaring a universal winner.
For a fine-leafed, grey-green Australian look, Grey Box™ Westringia is very hard to ignore.
For golden foliage and year-round colour, I'd look at Goldie Box™.
For a classic compact clipped effect, Aussie Box™ or traditional Japanese Box might fit the brief.
For glossy foliage and fragrance, Min-a-Min™ Murraya becomes really interesting.
For a softer repeated border with seasonal colour rather than a formal hedge, Nandina nana gives you something completely different.
And that's the point.
You don't need the plant somebody on Facebook says is the “best hedge plant”.
You need the plant whose natural size, growth habit, foliage and growing requirements match the hedge you're actually trying to create.
Get those things right and the hedge trimmer becomes an occasional tool.
Get them wrong and it becomes a family member.
I'd rather sell you the right plant.