How to make a sensory garden, even on a small patio

A sensory garden sounds like something with a budget and a landscape architect attached, and it really is not. It just means a garden built for more than looking at. Scent when you walk past, something soft to run a hand over, a sound that is not the neighbour's generator, a leaf you can pick and chew. Most gardens do one of those by accident. A sensory garden does all of them on purpose.

What surprises people is that a small space is often better at this than a big one. On a patio in Centurion you are sitting a metre from everything, so the scent actually reaches you and you can hear the grass move. In a large garden the good bits are spread out and half of them go unnoticed. There is decent evidence that the effect is worth chasing too. A field experiment published in the Journal of Environmental Psychology measured stress relief in urban green environments, and a large study in Scientific Reports found that spending at least two hours a week in nature was associated with better self-reported health and wellbeing.

Scent belongs at nose height, not ankle height

The most common mistake is planting scented things in a bed at ground level and then wondering why you never smell them. Scent has to be somewhere you disturb it. A pot at table height next to where you sit, or a trough along the edge of a walkway where your leg brushes the leaves, does far more than a whole bed of lavender ten metres away.

Lavender is the obvious starting point and it earns the place. The RHS growing guide describes it as an easy shrub that thrives in full sun and free-draining soil or a container, and drought tolerance matters a great deal on the Highveld in September. Scented pelargoniums are the other workhorse, and they are ours. Add jasmine on a trellis behind the seating if you have a warm wall, and be a little careful with quantity, because three strong scents fighting each other is worse than one.

Things worth touching

Touch is the sense everyone forgets and the one children go for first. Pelargonium tomentosum, the peppermint-scented pelargonium, is close to perfect for this. SANBI describes large, velvety, mint-scented foliage covered in soft glandular hairs, and it sprawls happily in semi-shade, which is where a lot of patios actually are. You touch it, it smells like mint, and it does two senses at once.

Contrast is what makes texture register. Velvety leaves against the fine grain of a cast concrete rim reads properly under the hand, in a way that soft leaves against a smooth plastic pot never quite does. Our pots are hand-cast from our Fibre Concrete Mix and they carry a faint stone texture that is worth building around. Put something feathery next to something rigid, something matte next to something glossy, and the whole arrangement becomes worth walking over to.

Sound, which is mostly grass and water

Grasses are the cheapest sound you can buy. Melinis nerviglumis, the bristle-leaved red top, forms neat tufts of blue-green leaves with silky pink panicles through summer, and it moves in the slightest breeze. Plant it in a trough rather than singly, because a run of it makes a sound and one plant does not.

Water changes a small space more than anything else you can add. It does not have to be big. A bird bath brings weavers and white-eyes in, and that is a sound too. If you want moving water, our water features range covers the smaller options that suit a patio, and the water feature guide works through pump sizing and placement before you buy.

Something you can pick and eat

Taste is the easiest sense to satisfy and the one that gets used daily. Mint, basil, rosemary, thyme, chives and a chilli in a sunny corner will feed a household and cost almost nothing. Keep mint in its own pot, always, because it will take over a mixed planting inside a season.

Put the herbs closest to the kitchen door, not in the prettiest spot, because you will only pick what is within ten steps on a Tuesday evening. Our guide to easy herbs in pots covers which ones tolerate a Highveld winter outdoors and which need bringing in, and the herb and vegetable pots collection has the shallower shapes that suit them.

Sight, which is about contrast rather than colour

Most people over-buy on flower colour and under-buy on form. A patio with fifteen different flowering plants looks busy and tired by March. A patio with three leaf colours, two strong shapes and one repeated pot finish looks considered all year, and it still gives you plenty to look at when nothing is in flower.

Height is the other half of it. Three pots of the same height in a row is a fence. The same three at three different heights becomes a group. Our piece on balancing pot colours and shapes gets into how to do that without it looking staged, and the size chart is useful for checking proportions before you commit.

Why pots make this easier than beds

A bed fixes everything at ground level. Pots let you decide the exact height at which each sense sits, which is the whole trick. Scent goes at nose height when you are seated. Texture goes at hand height beside the chair. The grass goes taller so it catches wind. Herbs go low and close so they are easy to reach with wet hands.

Pots also let you change your mind. A plant that turned out to be in too much afternoon sun moves in ten minutes rather than being dug up. Use a good bark outdoor potting soil for the shrubby things and succulent mix for anything grey-leaved and drought tolerant, because lavender and pelargonium both resent sitting wet. Stand everything on pot feet so summer thunderstorm water actually leaves the pot.

Putting it together on a small patio

Here is a layout that works on about four square metres. A tall pot in the corner with a grass in it, catching the light from behind. A trough along the edge of the seating with lavender and scented pelargonium, positioned so a leg brushes it on the way past. A medium pot at the table with the peppermint pelargonium, close enough to touch without standing up. A shallow pot of herbs by the door. A bird bath in the sun where you can see it from inside.

That is five containers and it covers every sense. Do not fill every corner. The gaps are what let each element read on its own, and a crowded patio smells like a nursery rather than like anything in particular. If you are working out what will actually cope with your light, the Garden Planner is a quicker way through it than trial and error.

Keep it alive through a Highveld year

Pots dry out faster than beds, particularly in the dry white heat of late winter when there has been no rain since April. Water deeply and less often rather than a splash every day, because shallow watering keeps roots near the surface where they cook. In frost season, move the tender things against a north-facing wall and leave the hardy ones out.

Cut lavender back after flowering so it does not go woody in the middle, and lift and divide the grasses every second or third spring. Ten minutes of maintenance a week keeps a sensory planting sharp, and it stays interesting because you are handling it rather than just looking at it. When you are ready to build yours, our patio and small garden pots are the sizes that work in this kind of space.

Frequently asked questions

What is a sensory garden?

A garden planned to engage sight, smell, touch, sound and taste rather than just appearance. It usually combines scented plants, textured foliage, grasses or water for sound, and edible herbs.

Can you make a sensory garden in pots?

Yes, and on a small patio pots work better than beds. A pot lets you set the exact height at which scent, texture or herbs sit, so each one is within easy reach of where you sit.

Which plants are best for a sensory garden in South Africa?

Lavender and scented pelargoniums for smell, Pelargonium tomentosum for velvety texture, Melinis nerviglumis or another tufted grass for sound, and mint, basil and rosemary for taste.

Do I need a water feature in a sensory garden?

No, but moving water changes how a small space sounds more than anything else you can add. A bird bath is a cheaper option and brings birdsong with it.

How much space does a sensory garden need?

About four square metres is enough. Five containers, a tall grass, a scented trough, a textured plant at table height, herbs by the door and some water will cover all five senses.