How the Chelsea Flower Show Has Evolved Through the Ages

A history of the world's most prestigious gardening event, from 1862 to 2026

The RHS Chelsea Flower Show is one of Britain's most enduring institutions — a five-day event that manages to be simultaneously a competitive horticultural exhibition, a society gathering, a design laboratory, a commercial marketplace, and a national conversation about how we relate to the natural world. Over its 113-year history at the Royal Hospital Chelsea — and the 60-odd years of predecessor shows that preceded it — Chelsea has evolved dramatically. It has reflected world wars, economic depressions, social revolutions, and environmental crises. It has launched careers, driven plant trends, and occasionally caused genuine public outrage. What follows is the story of how it became what it is today.

The Victorian Origins: Before Chelsea Was Chelsea (1833–1912)

The show's roots lie not in Chelsea at all, but in Chiswick, where the Royal Horticultural Society (itself founded in 1804) began holding flower shows at its garden from 1833. The Chiswick shows attracted a loyal following, but poor transport links held visitor numbers back, and in 1862 the society moved its Great Spring Show to Kensington, staging it in a single marquee with Queen Alexandra — the King's mother — as guest of honour. It was a three-day event, modest in scale but immediately popular.

Over the next 26 years, that popularity grew steadily. One marquee became two, then more. By 1888 the show had outgrown Kensington entirely and relocated to Temple Gardens, on the Embankment between Fleet Street and the Thames. Here the essential format was established: an annual event with large marquees housing plant and seed merchants (some of whom still exhibit today), and an international range of garden styles on display. The number of exhibitors nearly tripled from 48 to 120.

Then in 1912, the Great Spring Show was suspended for a year to make way for a one-off event — the Royal International Horticultural Exhibition — to be held at a new venue: the grounds of the Royal Hospital, Chelsea. It was so successful that the decision was taken to make the move permanent. In 1913, the Chelsea Flower Show as we know it was born.

1913: The First Chelsea

The inaugural show at the Royal Hospital opened on 20 May 1913 for three days. Demand from exhibitors was immediate and overwhelming: so many applied that only around half could be accommodated — still some 244 exhibitors. The show comprised a single enormous tent covering more than two acres, containing 84 large groups of flowers, plants and shrubs, around 95 exhibition tables, and 17 outdoor gardens. Visitors were introduced to exotic novelties including Japanese dwarf bonsai trees.

The cost of staging the show was £3,365. It made a profit of £88.

That the show was an immediate success was beyond doubt. It had found its home, and it would keep it. The Royal Hospital's grounds — with their formal avenues, their proximity to fashionable Chelsea, and their extraordinary setting against the red-brick backdrop of Wren's building — turned out to be the perfect stage.

War, Interruption, and Resilience (1914–1947)

The show continued through the early years of the First World War, running from 1914 to 1916, before being cancelled in 1917 and 1918 as the Royal Hospital's grounds were given over to the war effort. It returned afterwards, and by the 1920s had re-established itself on the social calendar with full fanfare: royal visits resumed, famous tea parties were established, and the show expanded to four days in 1927 after its brief delay during the General Strike of 1926 had, paradoxically, demonstrated how much public appetite there was for it.

Wider events continued to leave their mark on the show's character. In 1927, a campaign was mounted to ban foreign exhibitors and favour British nurseries exclusively. The RHS rejected the appeal with a line that has become something of a founding statement: "Horticulture knows nothing of nationality." The 1930s brought economic depression, and the show's displays reflected the national mood — herbs and vegetables became prominent, practical and frugal where once there had been extravagance. By 1937, however, the coronation of King George VI and Queen Elizabeth inspired an epic Empire Exhibition at Chelsea, featuring Australian mimosa, Kenyan gladioli, Canadian pines and Palestinian prickly pears — a cosmopolitan flourish that demonstrated the show's ambition to represent the full breadth of the horticultural world.

Weather, always a factor, added drama. In 1928, a ferocious storm flooded the marquees the night before opening; a dedicated team worked through the night and had the site immaculate for morning. Four years later, rain so severe that a summer house display collapsed drove greater weatherproofing measures into the design of the grounds.

The Second World War brought the most severe interruption of all. Air raid shelters and gun emplacements were built in the Royal Hospital's gardens, and the site was bombed multiple times during the Blitz. The RHS urged Britain's gardeners to turn their plots over to the Dig for Victory campaign. Strict rationing, combined with the devastation wrought on England's nurseries, meant the show could not resume until 1947. When it did, there was so little in the way of plants and seedlings available that a decisive innovation was made to fill the gap: flower arrangements were introduced into the programme for the first time. It was a practical necessity that became a permanent and beloved feature of the show.

The 1950s and 1960s: Post-War Recovery and the New Mass Audience

By 1951, Chelsea was back on its feet and growing fast. The patchwork of smaller tents that had served the show was replaced by the Great Marquee — a single structure of 3.4 acres recorded by the Guinness Book of Records as the world's largest tent, a record it held for many years. The post-war recovery of Britain's nurseries allowed the show to bloom again, and the coronation year of 1953 brought particular energy: the UK's gardens, like the country itself, were celebrating.

The 1950s were not without their peculiarities. The RHS Secretary, one Mr A. Simmonds, is alleged to have evicted scantily clad models from a rock garden display on the grounds that "livestock of any kind" may not be exhibited at the show — a ruling whose logic remains, in horticultural terms, impeccable if somewhat imaginatively applied.

The 1959 show saw The Times become the first newspaper to sponsor a garden: The Garden of Tomorrow, featuring, thrillingly, a radio-controlled lawn mower. Corporate and media involvement in the show had begun.

The 1960s brought a new design philosophy. Modernism — with its clean lines, concrete and minimalist sensibility — found its way into garden design, and Chelsea reflected it. The first garden for the disabled appeared in 1967, signalling a growing awareness that gardens were not just the preserve of the able-bodied and the privileged. Gardening for the masses became a genuine aspiration, not just an ideal. Designer John Brookes, who had first shown at Chelsea in 1962, introduced a minimal, modernist approach to small garden design in 1972 that proved transformative — demonstrating how outdoor space could be used for socialising and living, not merely for cultivation, and kickstarting a national trend for what we would now call outdoor rooms.

The 1970s and 1980s: Celebrity Designers and the Crowding Crisis

The 1970s saw the rise of something new at Chelsea: the celebrity garden designer. Before this era, the show had been primarily about plants and nurseries. Gardens were background context. In 1976, the great plantswoman Beth Chatto made her first appearance, presenting compositions of unusual plants from her Essex nursery that were unlike anything Chelsea had seen before. Her naturalistic style — emphasising foliage and form as much as flower, and entirely at odds with the show's nursery traditions — enchanted a generation of gardeners. She went on to win gold medals consecutively for a decade from 1977. Also in 1976, designer David Stevens became the first garden designer to be mentioned by name in the RHS programme — a small procedural change that signalled a fundamental shift in how the show understood and celebrated its role.

Visitor numbers climbed throughout the decade and into the 1980s. By 1979, overcrowding had become severe enough that the turnstiles were temporarily locked to regulate the flow of people — a novel and slightly alarming situation for a flower show. Extended opening hours and discounted late-afternoon tickets were introduced to spread the crowds. A one-way system, long resisted as impractical, was eventually adopted with great success.

By 1988, demand had reached the point where daily admissions were capped at 40,000, cutting total attendance from some 250,000 to 160,000. Adding to the controversy, RHS members were charged for tickets for the first time, albeit with a members-only preview day. Around 10,000 members resigned in protest. Chelsea had become something of a victim of its own success.

Wildlife gardens began to grow in prominence from the late 1980s, a reflection of a broader cultural shift towards ecological awareness. The show was starting to hold up a mirror to society's changing relationship with nature.

The 1990s: Conceptual Gardens and the Lifestyle Revolution

The 1990s marked a turning point in the visual and intellectual ambition of Chelsea's gardens. Conceptual show gardens — designed to express an idea or theme rather than simply to display plants beautifully — began to appear and quickly became the show's most talked-about feature. Gardens began to tell stories, make arguments, and stake out positions. This was genuinely new, and not everyone was comfortable with it.

Naturalistic landscapes — gardens that borrowed their visual language from the coast, the meadow and the woodland floor rather than from the traditional herbaceous border — also emerged in this decade as a controversial but compelling trend. The influence of continental European designers, particularly the Dutch wave associated with Piet Oudolf and the "new perennials" movement, began to make itself felt in British horticultural thinking, and Chelsea was where those ideas were tested and displayed.

The 1990s were, as one historian put it, "all about lifestyle and design." The garden was no longer just a place to grow plants; it was an extension of the home, a space for entertainment, aspiration and self-expression. Chelsea captured this perfectly, becoming as much a design event as a horticultural one — and attracting the attention of the style press accordingly.

The gnome, meanwhile, was having a difficult decade. The RHS had banned ornamental gnomes from the show in 1990 (gnomes had long been considered an aesthetic affront to the serious business of horticulture). In 1993, an antique gnome staged a one-gnome protest, blocking the entrance to the show in defiance of the ban. The ban would persist, with minor ceremonial exceptions, for another three decades.

The 2000s: Ambition, Celebrity and a New Pavilion

The new millennium brought significant structural change. In 2002, the Great Marquee — which had defined the show's physical character since 1951 — was demolished and replaced by a permanent, climate-controlled structure: the Great Pavilion. The old marquee's remains were recycled into 7,000 handbags, jackets and aprons, a faintly surreal but cheering outcome for the world's formerly largest tent.

The 2000s saw garden design at Chelsea grow increasingly daring and media-savvy. Corporate sponsors arrived in force, bringing budgets that enabled ever more spectacular constructions. The show became a staple of television coverage, the BBC's multi-episode annual programmes bringing Chelsea into living rooms across the country and transforming its designers into household names. Visitors were now not just gardeners but design enthusiasts, celebrities and social aspirants: Chelsea had become one of the events of the London season.

In 2009, James May exhibited a garden made entirely of Plasticine, for which he received a special Plasticine Gold Medal. The following year, Tony Smith's Easigrass Garden caused considerable consternation by featuring artificial grass — a material many in the horticultural community regarded as approximately the worst idea in human history. In 2011, Diarmuid Gavin suspended his Irish Sky Garden from a crane, creating what was described as the first garden to hang in the air since the Hanging Gardens of Babylon.

Small garden categories, introduced in 2001, democratised the show further. 'Courtyard', 'Chic' and 'City' gardens allowed designers working with constrained budgets and spaces to compete alongside the grand show gardens, reflecting the reality of urban gardening for the millions of Britons without a traditional plot.

New categories were matched by new causes. Chelsea became an increasingly prominent platform for charities, with gardens designed for organisations working in health, disability, mental health and social welfare. The 2016 show saw Philip Johnson, working with the 5,000 Poppies Project, create a remembrance garden using nearly 300,000 individually crocheted poppies, covering almost 2,000 square metres — a piece of community craft on a scale the show had never seen before.

Edible gardens became a defining trend from around 2010 onwards, as the growing movement for home food production and kitchen gardens found its natural showcase at Chelsea. Raymond Blanc's Jardin Blanc, which arrived at the show in 2016, brought an additional gastronomic dimension — pioneering a revolution in the show's catering offerings in the spirit of a chef who has always believed that the kitchen garden and the dining table are inseparable.

The 2010s: Sustainability, Diversity and a Show Under Scrutiny

By the 2010s, Chelsea was large enough, prominent enough and influential enough to find itself under genuine scrutiny — not just as a horticultural event but as a cultural institution. Questions were raised about access, diversity and relevance. The show's audiences and its designers were both predominantly white and middle-class. Its gardens, for all their beauty, were sometimes criticised for being impossible to replicate and irrelevant to the experience of most British gardeners.

The RHS responded with sustained effort: scholarship programmes for young designers, an increasingly international roster of exhibitors, and gardens that addressed social challenges from urban poverty to prison rehabilitation. Kate Middleton (the Princess of Wales) designing a garden for the 2019 show — the Back to Nature Garden, created with children's wellbeing in mind — exemplified the way Chelsea could generate mainstream cultural conversation.

The decade's most significant intellectual shift was ecological. The influence of designers like Dan Pearson and Piet Oudolf, with their emphasis on naturalistic planting that supports biodiversity and works with natural plant communities rather than against them, was by the 2010s transforming the aesthetic of the show entirely. Where Chelsea had once been defined by the formal herbaceous border — every plant perfectly placed, no weed tolerated — it now celebrated impermanence, self-seeding and the beauty of wildness.

The RHS launched its Sustainability Strategy during this period, shifting the organisation's identity from a gardening charity to one with a broader environmental mission. Chelsea reflected this: limestone was banned (its extraction damages fragile ecosystems), rainforest timber was prohibited, and water management became a criterion in garden judging. Community gardeners, schoolchildren and prisoner horticulture programmes all found their way into the show's programme.

Dandelions — previously considered the enemy of any self-respecting garden — appeared in 2023 as deliberate and celebrated features of show gardens, a moment that would have been literally inconceivable fifty years earlier.

2020–2021: The Pandemic and the Autumn Show

The Covid-19 pandemic brought the most disruptive interruption to Chelsea since the Second World War. In 2020, the physical show was cancelled for the first time since 1945; in its place, the RHS staged a Virtual Chelsea — an online programme of articles, videos and plant content that reached millions of people. It was, in the circumstances, a remarkable achievement, though nobody pretended it was a substitute.

In 2021, the show was held twice: a virtual event in May, followed by a physical show in September — the first time in the show's 108-year history that it had taken place in autumn. The experience of Chelsea in September, with different plants in bloom and a very different quality of light, was for many visitors simultaneously disorienting and magical.

The show returned to its traditional May dates in 2022, with a new RHS Director General in charge, and quickly re-established its rhythms. The winning garden that year — a rewilding landscape by Lulu Urquhart and Adam Hunt — announced emphatically that the ecological turn in Chelsea's design philosophy was not a passing trend but a new orthodoxy.

2026 and Beyond: The 113th Edition

The 2026 show — the 113th edition — is a show in vigorous health but also in pointed self-examination. Range Rover replaced The Newt in Somerset as headline sponsor after a period of uncertainty about the show's commercial future. The Newt departed with characteristic drama, building its own rival garden show down in Somerset nine days before Chelsea's gates opened, billing it as "an educational counterpoint" to the main event. Whether or not it represents competition, it tells a story about the direction of travel in horticultural culture.

The 2026 show embraces recycled materials prominently — aggregates and structural elements repurposed across multiple gardens, including Tom Stuart-Smith's reimagining of a garden for Tate Britain, which reuses paving and seating elements from the Tate's existing site. Artificial intelligence has arrived in the design process, employed in the conception of three gardens and prompting genuine questions about the future of the human designer. Sustainability is no longer a theme but an expectation: all gardens now require relocation plans, concrete is being phased out, and a preliminary Green Garden Audit has become standard.

The gnome ban, held for 36 years, was lifted in 2026 for the second time in the show's history, with celebrity-decorated gnomes auctioned for the RHS Campaign for School Gardening. The King's favourite flower — the delphinium — stars throughout the show. A rare double-flowered variety of which only a handful of plants survive anywhere in the world is displayed for the first time.

The theme is "Out of this World." Given everything that has happened between 1862 and now, it seems an apt description.

What Chelsea Has Always Been

Across more than 160 years of shows — in Kensington, Temple Gardens, and Chelsea itself — certain things have remained constant. The show has always been a mirror held up to its era: the fashions of garden design, the anxieties of the age, the possibilities of horticulture. It has reflected empire and austerity, modernism and ecology, celebrity culture and community activism. It has survived two world wars, a pandemic, general strikes, flooding, and the periodic threat of its own irrelevance.

It remains the most authoritative place in the world to launch a new plant variety, establish a designer's reputation, or set a trend that will ripple through British gardens for the next decade. Nurseries still secure orders worth millions from a single Chelsea appearance. The final-day plant sell-off, when exhibitors put their display plants up for whatever price the crowd will pay, remains one of the great unrepeatable spectacles of the horticultural calendar.

And every year, in the grounds of the Royal Hospital in SW3, the world's gardeners gather to argue — implicitly, through their choices of plant and stone and water and structure — about what a garden is for, and what beauty means. That argument has been running for 113 years. It shows no sign of being settled.

The RHS Chelsea Flower Show takes place annually in May at the Royal Hospital Chelsea, London SW3.