Asthma + Lung UK Breathing Space Garden at RHS Chelsea 2026

Asthma + Lung UK Breathing Space Garden

About this garden

Guided by the Japanese principle of yohaku no bi — the beauty of empty space — this tranquil woodland-edge garden reflects the voices of people living with lung conditions, offering a calm, restorative breathing space in which to recover and reconnect with nature. One in five people in the UK will develop a lung condition in their lifetime; this garden makes that invisible experience visible and dignified.

Accessible paths, graded steps and seated rest points lead to the heart of the garden, where two structural pine trees — chosen for their natural antioxidant and immune-boosting properties — anchor a floating platform designed for breath-supporting therapies including yoga and tai chi. Running water and a still pond introduce soothing sound and reflective calm, drawing on the Tokachi Millennium Forest in Japan as a design reference. A restrained palette of greens and whites is lifted by pops of Asthma + Lung UK's brand colours — pink, purple and orange — while pockets of low-allergen plants are chosen for their gentle impact.

The sustainability innovation here is extraordinary: the garden trials ACLA, a carbon-negative additive made by Low Carbon Materials using biochar, in what is believed to be a world-first application combined with calcined clay. Recycled aluminium oxygen cylinders are repurposed as water spouts and channel drains — a profoundly on-theme detail for a lung charity garden. A symbolic and powerful touch: coal dust from the UK's last coal-fired power station has been incorporated into the aggregate, marking the country's historic transition as the first in Europe to fully close coal power.

The garden will be relocated to the Breathing Space lung rehabilitation centre in Rotherham after the show, giving the design a meaningful second life.

Gallery

Plant List102

Trees & Shrubs

Acer japonicum ‘Aconitifolium’

Downy Japanese maple ‘Aconitifolium’

Cryptomeria japonica

Japanese cedar

Euonymus planipes

Flat-stalked spindle tree

Hydrangea macrophylla

Common hydrangea

Pinus sylvestris

Scots pine

Perennials, Grasses & Ferns

Acaena affinis

New Zealand bur

Actaea simplex (Atropurpurea Group) ‘Brunette’

Bugbane ‘Brunette’

Adiantum aleuticum ‘Imbricatum’

Aleutian maidenhair ‘Imbricatum’

Ajuga reptans ‘Catlin’s Giant’

Bugle ‘Catlin’s Giant’

Alchemilla alpina

Alpine lady’s mantle

Amsonia tabernaemontana

Eastern bluestar

Anemone leveillei

Woodland anemone

Anemone multifida

Rocky Mountain windflower

Anthericum ramosum

Branched St. Bernard’s lily

Aquilegia ‘Spring Magic Blue & White’

Columbine ‘Spring Magic Blue & White’

Arisaema consanguineum

Chinese jack-in-the-pulpit

Aruncus ‘Horatio’

Goat’s beard ‘Horatio’

Aruncus ‘Misty Lace’

Goat’s beard ‘Misty Lace’

Asarum caudatum

Western wild ginger

Asarum europaeum

Hazelwort

Asplenium scolopendrium ‘Undulata’

Undulating hart’s tongue fern

Astilbe japonica ‘Europa’

Astilbe ‘Europa’

Bergenia Ballawley hybrids

Elephant’s ears Ballawley hybrids

Bistorta affinis ‘Superba’

Knotweed ‘Superba’

Blechnum penna-marina

Antarctic hard fern

Boehmeria platanifolia

Sycamore-leaf false nettle

Brunnera macrophylla ‘Betty Bowring’

Siberian bugloss ‘Betty Bowring’

Carex from Kyoto, Japan

Sedge from Kyoto, Japan

Carex muskingumensis

Palm branch sedge

Chloranthus fortunei

Fortune’s chloranthus

Cirsium rivulare ‘Trevor’s Blue Wonder’

Plume thistle ‘Trevor’s Blue Wonder’

Clematis recta ‘Purpurea’

Clematis ‘Purpurea’

Corydalis curviflora subsp. rosthornii ‘Blue Heron’

Corydalis ‘Blue Heron’

Corydalis flexuosa ‘Purple Leaf’

Blue corydalis ‘Purple Leaf’

Cyrtomium falcatum

Japanese holly fern

Darmera peltata

Umbrella plant

Disporum longistylum ‘Green Giant’

Fairy bells ‘Green Giant’

Dryopteris affinis

Scaly male fern

Dryopteris erythrosora var. prolifica

Prolific copper shield fern

Dryopteris sieboldii

Siebold’s wood fern

Epimedium ‘Amber Queen’

Barrenwort ‘Amber Queen’

Epimedium ‘Spine Tingler’

Barrenwort ‘Spine Tingler’

Epimedium grandiflorum ‘White Queen’

Large-flowered barrenwort ‘White Queen’

Equisetum hyemale

Scouring rush

Euonymus fortunei ‘Kewensis’

Wintercreeper

Euphorbia ceratocarpa

Horned spurge

Euphorbia cornigera

Horned spurge

Euphorbia oblongata

Balkan spurge

Filipendula purpurea

Japanese meadowsweet

Francoa sonchifolia

Bridal wreath

Geranium phaeum ‘Lily Lovell’

Mourning widow ‘Lily Lovell’

Geranium phaeum ‘Samobor’

Mourning widow ‘Samobor’

Geranium pratense ‘Splish Splash’

Meadow cranesbill ‘Splish Splash’

Geranium renardii

Caucasus geranium

Gillenia trifoliata

Bowman’s root

Heuchera cylindrica ‘Greenfinch’

Alum root ‘Greenfinch’

Hosta ‘Devon Green’

Plantain lily ‘Devon Green’

Iris ensata

Japanese water iris

Iris laevigata

Japanese iris

Iris sibirica ‘Butter and Sugar’

Siberian iris ‘Butter and Sugar’

Iris sibirica ‘Shirley Pope’

Siberian iris ‘Shirley Pope’

Iris sibirica ‘Silver Edge’

Siberian iris ‘Silver Edge’

Lamium orvala f. albiflorum

Balm-leaved white deadnettle

Laserpitium siler

Laserwort

Libertia chilensis

New Zealand satin flower

Lilium hansonii

Hanson’s lily

Lilium martagon

Turk’s cap lily

Lysimachia nummularia

Creeping Jenny

Mathiasella bupleuroides ‘Green Dream’

Matteuccia struthiopteris

Ostrich fern

Meum athamanticum

Spignel

Miscanthus sinensis ‘Gracillimus’

Eulalia ‘Gracillimus’

Mukdenia rossi ‘Karasuba’

Mukdenia ‘Karasuba’

Narcissus poeticus var. recurvus

Old pheasant’s eye

Ophiopogon planiscapus ‘Nigrescens’

Black lilyturf

Osmunda regalis

Royal fern

Paeonia lactiflora ‘White Wings’

Peony ‘White Wings’

Peucedanum verticillare

Hog fennel

Pilea matsudae

Taiwan pilea

Podophyllum versipelle ‘Spotty Dotty’

Mayapple ‘Spotty Dotty’

Polygonatum odoratum

Angled Solomon’s seal

Polygonatum stenanthum

Narrow-anthered Solomon’s seal

Polygonatum verticillatum

Whorled Solomon’s seal

Primula bulleyana

Bulley’s primrose

Primula pulverulenta

Candelabra primula

Prunella vulgaris

Selfheal

Rodgersia pinnata ‘Superba’

Rodgersia ‘Superba’

Rodgersia podophylla ‘Braunlaub’

Rodgers’ bronze-leaf ‘Braunlaub’

Rubus fruticosus ‘Himalayan Giant’

Blackberry ‘Himalayan Giant’

Sanguisorba officinalis ‘Lum’

Great burnet ‘Lum’

Scleranthus biflorus

Seseli libanotis

Moon carrot

Sesleria heufleriana

Balkan blue grass

Sorbaria sorbifolia ‘Sem’

False spiraea ‘Sem’

Spiraea japonica ‘Albiflora’

White Japanese spiraea

Tellima grandiflora

Fringe cups

Tellima grandiflora Rubra Group

Fringe cups Rubra Group

Teucrium scorodonia ‘Crispum’

Wood sage ‘Crispum’

Thalictrum ‘Black Stockings’

Rue ‘Black Stockings’

Triteleia laxa ‘Koningin Fabiola’

Grassnut ‘Koningin Fabiola’

Veratrum nigrum

Black false hellebore

× Fatshedera lizei ‘Annemieke’

Tree ivy ‘Annemieke’

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