Designing a Sensory Garden with Scent and Texture

Why a Sensory Garden Rewards Careful Planning

A sensory garden is not a novelty border or a collection of gimmicks. It is a garden designed around the way people actually meet plants — through fingertips, noses, ears and the soles of shoes. Get the design right and a modest plot three or four metres square can deliver more delight than a much larger lawn. The trick is to think in layers: scent at nose height, texture within easy reach, sound carried on the breeze.

Plan for all-weather interest, too. In Britain that means choosing plants that shrug off damp winters and still perform in a grey July. Aim for something to smell, something to stroke and something to listen to in every season, and site the most fragrant plants where the sun warms them and where you pass by often.

Fragrant Herbs: Scent You Can Brush Past

Herbs are the backbone of any scent garden because their fragrance releases on contact. Plant them along the edge of a path where a sleeve or a hand will brush the foliage as you walk by.

• Lavender — English lavender needs full sun and sharp drainage. Add grit to the planting hole and plant on a slight mound so winter wet never sits at the crown.
• Rosemary — a prostrate form spills over a low wall, putting the needles at child height. Give it shelter from cold east winds.
• Thyme — creeping and lemon-scented types are perfect at the front of a planter, releasing a warm, resinous smell underfoot.
• Lemon balm and mint — superb for crushing between fingers, but keep mint in a sunken pot or it will run through the border.
• Chamomile — the apple-scented 'Treneague' makes a soft, low mat that invites bare feet and will take light foot traffic.

Two cautions. Rue and some euphorbias can cause skin reactions in sunlight, so they are poor choices where children handle foliage, and foxgloves and aconitums are best kept out of reach even though they are handsome.

Soft Grasses That Invite a Touch

Grasses bring movement and sound, and their fine blades are irresistible to small hands. Choose a mix of deciduous and evergreen types so there is texture in winter as well as summer.

• Pheasant's tail grass — arching, hair-fine leaves that turn copper in autumn; superb in a large container.
• Tufted hair grass — tolerant of damp, heavy clay and marvellous backlit by low winter sun.
• Blue fescue — compact, steely blue and happy in narrow planters or gravel.
• Hakonechloa macra — the best choice for a shady courtyard, with a waterfall of silky green foliage.

Cut deciduous grasses back to about 10cm in late February or early March, before new shoots appear, and comb out dead stems with gloved hands or a small rake. Never trim in autumn — the bleached seed heads carry the winter interest, and the hollow stems make the rustle that gives the garden its voice.

Bamboo for Rustle and Movement

Nothing beats bamboo for long, low rustling notes, but the wrong choice becomes a thug. Stick to clump-forming species such as Fargesia rufa, Fargesia nitida and Fargesia murielae. All are hardy, well behaved and free of the running habit that makes Phyllostachys so troublesome. A single Fargesia in a large planter will reach 1.5 to 2 metres within a few seasons and sound wonderful in the slightest breeze.

If you do want a running bamboo for screening, plant it inside a rigid root barrier sunk 60cm into the ground and leave a clear strip at least a metre wide so you can inspect it. Check each spring for shoots that have escaped and cut them off below soil level with a spade. Clumping bamboos need little more than a mulch of well-rotted manure in spring, water through their first two summers, and the occasional removal of old canes.

Raised Planters: Making Texture Easy to Reach

The difference between a pretty garden and a genuinely sensory one is often height. Raised planters bring leaves to the hands of children, to someone seated in a wheelchair, and to anyone who cannot kneel on wet ground.

For comfortable seated access, aim for a soil surface around 600–750mm above ground level, with at least 350mm of clear space underneath for knees and footplates. For children, a lower tier at roughly 450mm works well. A two-tier planter — shallow at the front, deeper behind — lets small visitors reach everything without climbing.

• Keep the width no greater than 1.2 metres so every plant can be reached from one side.
• Use a soil-based mix rather than pure compost; it holds moisture through a hot week and anchors herbs firmly.
• Top-dress gravel around drought-lovers such as lavender and thyme to keep foliage dry and fragrant.
• Round off sharp corners, and avoid prickles, spiky leaves and irritating sap.
• Leave a path at least 900mm wide behind the planter so a wheelchair or buggy can turn comfortably.

Group plants by the sense they serve: scent close to a seat, soft grasses at knee height, bamboo where it can catch the breeze and be heard rather than handled.

Simple Care Through the Year

Sensory gardens are worked hard, so a little routine keeps them generous. In spring, mulch herbs and grasses with garden compost, divide congested clumps of thyme and chamomile, and top up containers with fresh soil. Through summer, deadhead lavender to prolong flowering, and water planters early in the morning so foliage is dry by evening, which reduces the risk of mildew.

In autumn, leave seed heads standing for the birds and for the rattling sound they make. In winter, tidy bamboo canes, check root barriers and clear drainage holes. Above all, spend time in the garden with your hands rather than your tools: bruise a leaf, brush a grass, listen to the bamboo. That is the whole point, and it costs nothing.