A sensory garden is not just about lavender and mint. It is about designing deliberate experiences across all five senses—scent, touch, sound, taste, and sight—in a way that makes the garden accessible, therapeutic, and engaging for people of all abilities.
If you are creating a sensory garden for a family member with dementia, a school project, or simply want a more immersive outdoor space, the principles are the same: plan for engagement beyond the visual, make everything reachable, and choose plants that perform reliably in the UK climate.
This guide covers what we have learned from designing sensory gardens across Kent, Surrey, and London. Real costs, plant selections that work in South East England conditions, and the practical layout decisions that turn a good idea into a garden people actually want to spend time in.
What Makes a Garden "Sensory"?
Most gardens engage sight and some scent. A sensory garden is explicitly designed for all five senses working together, with each plant and structural choice adding to at least one sensory experience—ideally two or three.
The key difference: deliberate stimulation across scent (fragrant flowers, aromatic foliage), touch (varied textures from soft to coarse), sound (rustling grasses, water features, wind through bamboo), taste (edible herbs, fruit, flowers), and sight (colour, movement, seasonal change).
Sensory gardens are particularly valuable for people with dementia or Alzheimer's, children with autism or sensory processing needs, partially sighted or blind visitors, care home residents, and anyone seeking a more mindful, calming outdoor space.
Design Principles: How to Plan a Sensory Garden
1. Accessibility First
A sensory garden that is not physically accessible fails half its purpose. Path widths should be minimum 1.2m for a standard manual wheelchair, ideally 1.5m to allow two wheelchairs to pass. Path surfaces must be non-slip, firm, and level—resin-bound gravel (£60-£90/sqm) or textured paving work well.
Raised beds should be 65-70cm high with a 10cm undercut base so wheelchair footrests slide underneath. This allows users to reach 40cm into the planting without stretching. Place benches with 1.5m × 1.5m hard surface alongside for wheelchair positioning.
The charity Thrive (thrive.org.uk) provides free sensory garden design consultations for healthcare, education, and community projects.
2. Zone by Sense
The most effective sensory gardens divide space into distinct zones, each anchored by a primary sense. Example 5-zone layout: scent corridor (path flanked by lavender, roses, jasmine), texture garden (raised beds with lamb's ear, grasses, ferns), sound zone (bamboo grove, grasses, water feature), edible area (herbs, fruit, salad leaves), and sight zone (ornamental grasses, seasonal colour).
3. Layer Heights
Position scent, texture, and colour at three levels: ground (0-50cm with ground-cover herbs), waist to chest (50-120cm with lavender, roses, grasses), and head height (120cm+ with climbing jasmine on arches). This ensures sensory engagement whether seated, standing, or in a wheelchair.
Plants for Scent: The Fragrance Corridor
Scent is the most memory-linked sense. In sensory gardens for dementia care, familiar smells like lavender, roses, and rosemary can trigger long-term memories and reduce agitation.
Lavandula angustifolia 'Hidcote' is the benchmark scent plant. Highest concentration of linalool of any UK-hardy lavender. Volatile oil release peaks 20 minutes after midday. Position paths within 1m. Flowers June-August. Hardy to -20°C. £6-£9 per plant, plant 5 per metre for continuous hedge effect.
Rosa 'Gertrude Jekyll' is the strongest-scented UK garden rose. Repeat flowering June-October. Grows 1.5m as shrub or 3m supported. Scent carries 4-5 metres. £18-£25 per plant.
Trachelospermum jasminoides (Star Jasmine) is a climbing evergreen with intensely fragrant white flowers July-August. Train over arches at head height. Hardy to -10°C. £20-£30 per plant.
Rosmarinus officinalis (Rosemary) releases scent when foliage is brushed or crushed. Position at path edges in raised beds. £5-£8 per plant.
Sarcococca confusa (Christmas Box) provides winter scent with fragrant white flowers January-February. One of the few strong scents in winter. Grows to 1.5m. Tolerates full shade. £12-£18 per plant.
Plants for Touch: Texture and Tactile Interest
Stachys byzantina (Lamb's Ear) feels like velvet. The reference texture plant for sensory gardens. Fully hardy evergreen ground cover. Position at raised bed edges within easy reach. £4-£6 per plant, plant 5-7 per sqm.
Dryopteris filix-mas (Male Fern) has fine, papery fronds—the opposite sensation to Stachys. Fully hardy, tolerates deep shade. £6-£10 per plant.
Betula utilis var. jacquemontii (Himalayan Birch) has papery white bark that peels in thin layers. Position beside paths at wheelchair height (50-100cm up trunk). £80-£150 for 2-3m multi-stem.
Plants for Sound: Wind, Water, and Movement
The UK average wind speed is 12mph—one of the best climates for sound-generating plants.
Phyllostachys nigra (Black Bamboo) is the most effective sound plant. Hollow culms produce clicks and rattles from 5mph wind. Reaches 3-4m. Must be contained with root barriers. £30-£50 per plant.
Stipa gigantea (Giant Oat Grass) creates papery rustling from oat-like seed heads. Flowers June, holds structure into December. Grows 1.8m. £12-£18 per plant.
Water features provide reliable sound independent of wind. Bubble fountains £150-£400, rills £800-£2,000, small wildlife ponds £300-£800.
Plants for Taste: The Edible Sensory Garden
Edible planting must be accessible, pesticide-free, and clearly labelled.
Fragaria vesca (Alpine Strawberry) produces small, intensely flavoured fruit June-October. £4-£6 per plant, plant 5-7 per sqm.
Mentha spicata (Spearmint), Thymus vulgaris (Thyme), and Origanum vulgare (Oregano) are classic herbs. £3-£5 per plant. Grow in raised beds at waist height for accessible harvesting.
Rubus idaeus (Raspberry) can be summer or autumn fruiting. Train on posts at waist height. £8-£12 per cane.
Sensory Garden Costs (2026 South East Prices)
Design fees: Concept design £800-£1,500 (up to 50sqm), full design package £1,500-£3,500 (50-150sqm), community/charity project £2,000-£5,000.
Build costs: Single raised bed £250-£700, small sensory zone (10-15sqm) £2,000-£3,200, full redesign (50sqm) £6,800-£14,500, large community project (150sqm+) £16,000-£31,000.
Costs vary by location (London +20-30%) and specification.
Maintenance: What to Expect
Sensory gardens require 2-3 hours per week in growing season for a 50sqm garden. Weekly tasks include deadheading roses and lavender, harvesting edible herbs, checking water features, and removing trip hazards. Monthly tasks include hand weeding raised beds and trimming path edges.
Common Mistakes to Avoid
Planting scent at ground level makes it hard to smell—raise fragrant plants to waist/nose height. Overlooking winter interest leaves the garden empty November-February—choose evergreens, winter scent, and structural seed heads. Avoid toxic plants like Euphorbia, Ricinus, and Rue in touch zones. Underestimating bamboo spread—contain Phyllostachys with root barriers.
Frequently Asked Questions
What is the best scented plant for a sensory garden?
Lavandula angustifolia 'Hidcote' (English lavender). Highest linalool content, strongest fragrance, fully hardy, flowers June-August. Plant in multiples at path edges.
How do I make a sensory garden wheelchair accessible?
Path width minimum 1.2m, firm non-slip surface, raised beds at 65-70cm with undercut base, 1.5m diameter turning circles at junctions.
How much does a sensory garden cost?
Single raised bed £400-£700, small sensory zone (10-15sqm) £2,000-£3,200, full garden redesign (50sqm) £6,800-£14,500.
Can I create a sensory garden in a small space?
Yes. A single 2m × 1m raised bed can hold lavender (scent), Stachys (touch), grasses (sound), and herbs (taste) in just 2sqm.
Let Us Design Your Sensory Garden
We design sensory gardens across Kent, Surrey, and London that balance accessibility, sensory engagement, and practical maintenance. Whether for a care home, school, or private garden, we can help.
Design services start at £1,500. Full design-and-build from £6,800. Contact us for a free consultation: 0203 834 9807
Related guides: Accessible Garden Design | Planting Design London | Wildlife Garden Design | Garden Design Kent | Garden Design Surrey