What Can I Plant Under a Window? Best Plants That Won’t Grow Too Tall
There is a particular kind of gardening optimism that goes like this:
It’ll be fine. I’ll just keep it pruned.
Five years later, you're standing on a ladder trying to stop a shrub from swallowing the bedroom window.
Garden beds underneath windows are deceptively tricky. They're often prominent parts of the garden, particularly across the front of a house, so naturally we want them to look good. But there’s a fairly important restriction sitting directly above them.
The window.
And yet we routinely plant shrubs underneath windows that naturally want to grow two or three metres tall, then spend the rest of their lives cutting them back to 80cm.
There is a much easier way.
Choose plants whose natural mature size already suits the space.
It sounds painfully obvious. It also solves an astonishing number of gardening problems.
Start with the window, not the plant
Before buying anything, measure from the soil level to the bottom of the window.
Not roughly.
Actually measure it.
If you've got 90cm between the garden bed and the windowsill, that immediately gives you useful information. A shrub naturally growing to around 60–80cm has room to be itself. Something naturally growing to two metres does not.
You should also measure the depth of the garden bed.
This is where people get caught.
A plant might have the perfect height but eventually grow 1.5 metres wide in a 60cm-deep bed. You'll solve the window problem and create a footpath problem instead.
Height and width matter.
The plant has to fit the three-dimensional space you're actually giving it.
Stop designing around how big the plant is today
This is probably the biggest mistake we see when people choose plants.
They look at the pot.
A little shrub in a tube or 140mm pot looks perfectly sensible beneath a window because, right now, it would barely obstruct a mouse.
But you're not buying today's plant.
You're buying the plant it becomes.
That means mature dimensions should be one of the first things you check — especially around windows, paths, driveways, doors and other fixed parts of the house.
A small plant becoming bigger isn't an unexpected gardening event.
That was the plan all along.
Grey Box™ Westringia — structure without the eventual monster
If you're after a neat, evergreen shrub beneath a window, Grey Box™ Westringia is exactly the sort of growth habit worth looking for.
Rather than planting a much larger Westringia and repeatedly cutting it down to size, Grey Box™ has been selected for compact growth.
That distinction matters.
Pruning can certainly shape plants and maintain density, but there's a difference between maintaining a naturally compact shrub and spending years preventing a large shrub from becoming a large shrub.
One is gardening.
The other is an ongoing disagreement with genetics.
Compact Westringias can be particularly useful where you want some structure across the front of a house without creating a great green wall beneath the windows.
And because the foliage is evergreen, that structure doesn't disappear when flowering finishes.
Goldie Box™ Westringia — foliage colour counts too
Here's another thing we tend to do with front gardens.
We rely almost entirely on flowers for colour.
Then the flowers finish and everything goes green again.
Goldie Box™ Westringia gives you another option because its foliage itself contributes colour and contrast.
That can be particularly effective beneath windows because these beds are often viewed from the street or driveway throughout the entire year.
Flowers are fantastic.
But foliage turns up for work every day.
Used repeatedly, a compact foliage plant can create a really clean foundation across the front of a house, with seasonal flowers or feature plants added around it.
You don't need twelve different flowering shrubs to make a front garden interesting.
Sometimes a change in foliage colour does more.
Gardenia Radicans — put fragrance where people actually walk
If the area gets the conditions Gardenias prefer, Gardenia Radicans can be a beautiful lower-growing option beneath windows.
It has glossy foliage, fragrant white flowers and a much lower habit than many of the larger Gardenias people are familiar with.
And there's a lovely bonus to planting fragrance around the house.
You actually experience it.
Gardeners sometimes put their most beautifully scented plants somewhere down the back fence where nobody goes unless the wheelie bin has escaped.
Put fragrance near windows, entrances, patios and paths and suddenly it becomes part of everyday life.
An open window with Gardenia flowering outside it?
That's a plant earning its position.
Carissa Desert Star™ — compact plants are incredibly useful
Carissa Desert Star™ is another plant worth considering when the brief calls for something compact and structured.
Smaller-growing shrubs aren't merely miniature versions of “real” landscaping plants. In modern gardens, they're often exactly what we need.
Houses are larger relative to block size. Garden beds are narrower. Paths run closer to walls. Windows and services restrict planting areas.
A plant that naturally occupies a compact footprint can therefore be far more useful than something that grows quickly and requires constant containment.
This is why we keep banging on about mature size.
Fast-growing isn't automatically better.
If it rapidly grows into a size you never wanted, all you've achieved is reaching the problem sooner.
Dwarf Nandina — seasonal foliage without blocking the view
Dwarf Nandina can be useful where you want a lower mound of foliage with seasonal colour.
And despite the common name “Sacred Bamboo” being used for Nandina domestica, Nandina isn't actually bamboo.
Gardening names enjoy making things unnecessarily confusing.
Compact Nandinas can bring warm foliage tones into a planting without relying on a tall flowering shrub for interest.
That's particularly useful underneath windows because it gives you another layer of colour while maintaining the open feeling around the house.
Again, the exact cultivar matters.
“Nandina” alone doesn't tell you enough.
Different selections can have different mature sizes and growth habits, so always check the plant you're actually buying rather than assuming every Nandina behaves the same way.
Little Ruby™ — when you want serious foliage contrast
Not every under-window garden needs to be a polite row of green shrubs.
Little Ruby™ gives you an opportunity to bring much deeper foliage colour into the planting.
Dark burgundy and purple foliage can be particularly effective against pale walls, rendered homes and lighter paving because the contrast makes the planting stand out even when nothing is flowering.
The trick is restraint.
One burgundy plant surrounded by seventeen unrelated colours can disappear into the chaos.
Repeat that colour several times through the bed and suddenly it becomes a design decision.
This is one of the easiest ways to make a relatively simple planting look considered.
Repeat the interesting thing.
Don't immediately go looking for another interesting thing.
Little Jess™ Improved Dianella — you don't necessarily need shrubs
Here's where I'd challenge the usual approach altogether.
Who said the garden underneath a window needs to be a hedge?
Sometimes a repeated mass of Little Jess™ Improved Dianella makes far more sense.
Its compact strappy foliage gives you movement and texture without creating a solid block beneath the window.
That can be particularly effective on contemporary houses where you want the planting to soften the architecture without covering it.
And because the foliage has a completely different form from a clipped shrub, Dianella works beautifully alongside compact structural plants.
Imagine Grey Box repeated for structure with Little Jess woven through or massed in front.
Now you've got two plants doing different jobs rather than six plants competing for attention.
That's landscaping.
Just Right™ Liriope — useful when the house creates shade
Under-window beds can have surprisingly different light conditions.
One side of the house might bake in western sun.
Another may receive gentle morning light.
A bed beneath an eave might be bright but receive very little direct sun.
For suitable shadier positions, Just Right™ Liriope gives you another compact strappy option.
This is why copying the exact same planting around all four sides of a house can go badly.
The architecture might be symmetrical.
The sunlight isn't.
Choose plants for the actual conditions on each side, then use repeated shapes, textures and colours to make the overall garden feel connected.
What if the window is really low?
Then go lower.
Don't spend the rest of your life pruning a 60cm plant beneath a window that begins 40cm above the garden.
Use groundcovers.
Plants such as Low Horizon™ Westringia, Purple Fusion™ Scaevola, Yareena™ Myoporum, Mini Mondo or other suitably low-growing plants can create foliage across the bed without obscuring the window.
This can look fantastic around full-length windows too.
Rather than plants climbing halfway up the glass, you get a low carpet of foliage outside with taller planting positioned elsewhere.
Sometimes the restriction becomes the design.
What about privacy?
This is where things get interesting.
Occasionally people deliberately want plants to cover part of a window because the room needs privacy.
That's fine.
But decide that before choosing the plants.
There is a difference between:
“I want foliage approximately 1.5 metres high here because it screens the bedroom.”
and:
“This shrub has accidentally eaten the bedroom.”
If privacy is the goal, you might intentionally use taller plants beside or strategically in front of the window rather than creating a dense hedge directly against the entire house.
Think about the sightline.
You may be able to provide privacy without blocking all the light.
Leave room between plants and the house
Don't forget you're planting beside a building.
You still need sensible access for maintenance, windows, taps, vents, utilities and whatever else is located along the wall.
Good air movement around plants matters too.
And don't position plants based solely on where their trunks or crowns will sit. Think about where the mature foliage will reach.
A shrub planted 30cm from the wall may eventually spend half its life pressed against the house.
Again:
Mature width.
It's not the glamorous part of garden design, but it might be the most useful measurement you'll take.
Repetition works beautifully beneath windows
Under-window garden beds are one of the easiest places to demonstrate how powerful repetition can be.
Suppose you've got a six-metre bed.
You could plant:
Grey Box. Gardenia. Nandina. Dianella. Carissa. Something flowering. Another thing you found on Saturday. Something your mother gave you. And one mystery plant whose label disappeared in 2024.
We've all seen that garden.
Or you could choose two or three plants and repeat them.
For example, compact Westringias for structure, Little Jess for movement and Gardenia Radicans near the entrance for fragrance.
Suddenly the house and garden start relating to each other.
The windows repeat.
The architecture repeats.
Let the planting repeat too.
Don't line everything up like little soldiers
Repetition doesn't necessarily mean planting a ruler-straight row.
Unless you're deliberately creating a formal garden, staggered groups can feel softer and more natural.
A slightly deeper garden bed gives you even more freedom.
Use compact shrubs as the structural layer, then allow lower foliage or groundcovers to move around and between them.
Now the garden has depth rather than looking like a queue of plants waiting beneath the windows.
It's still simple.
It just isn't flat.
Think about what the garden looks like from inside
This gets forgotten surprisingly often.
You're not only looking at the window from outside.
You're looking through it from inside.
Stand in the room.
What do you see?
A fence?
The driveway?
A beautiful tree?
Could a low planting frame that view rather than obscure it?
Could taller plants positioned to either side create a green frame while keeping the centre open?
Gardens around windows are part of the interior experience too.
A beautifully positioned plant outside can effectively become a living picture through the glass.
That's worth designing deliberately.
Frequently Asked Questions
What are the best plants to grow under windows?
Look for plants whose mature height and width fit comfortably beneath and around the window. Compact shrubs such as selected Westringias, Gardenia Radicans, compact Nandinas and Carissa can work in suitable conditions, while Dianella, Liriope and groundcovers provide lower alternatives.
What can I plant under a low window?
For very low windows, consider groundcovers and low-growing plants rather than shrubs. Low Horizon™ Westringia, selected Scaevola and Myoporum, Mini Mondo and other low plants may suit depending on sunlight, climate and soil.
What shrubs stay small naturally?
There are compact cultivars across many plant groups, including Westringia, Gardenia, Nandina and Carissa. Always check the mature dimensions of the specific cultivar rather than assuming all plants within a species or genus remain the same size.
How far should shrubs be planted from a house?
There isn't one universal distance because plants have very different mature widths. Position the plant so its mature foliage has appropriate room while maintaining access and clearance from walls, windows and other structures.
What should I plant under a front window for colour?
Colour doesn't have to come only from flowers. Gold, burgundy, grey and variegated foliage can provide year-round contrast. Goldie Box™ Westringia, Little Ruby™ and other foliage plants can be combined with flowering plants where conditions suit.
What can I plant under windows instead of a hedge?
Try repeated compact shrubs, Dianellas, Liriope or low groundcovers. Layering two or three complementary plants can provide structure without creating a continuous clipped hedge.
Can I plant Gardenias under a window?
Yes, where the light, climate, soil and drainage suit Gardenias. Lower-growing forms such as Gardenia Radicans can be particularly useful where a larger Gardenia would eventually obstruct the window.
The easiest plant to prune is the one you don't have to
Pruning is part of gardening.
There is nothing wrong with clipping a hedge, shaping a shrub or giving something an occasional tidy-up.
But there's a difference between pruning a plant because you want to shape it and pruning it because you've planted a two-metre shrub underneath an 80cm window and the two of you are now locked in a lifelong battle.
Measure the space.
Check the mature height.
Check the mature width.
Then choose something that actually belongs there.
It may not sound as exciting as discovering some secret gardening trick.
But choosing a plant that fits?
That is the trick.