The International Association of Horticultural Producers (AIPH) members consist of thousands of growers of flowers and ornamental plants around the world who are together united by one essential goal – promoting the place of plants in people’s lives.
AIPH is responsible for approving the world’s most exceptional horticultural expos creating long lasting green legacies in cities across the globe.
AIPH Blooming Economies & Cities to Inspire The World 2.0. Up-to-date statistics from recent Expos hosted in Asia and Europe.
Learn moreAIPH hosts several conferences, webinars and events such as the International Grower of the Year award throughout the year. Read about these along with the latest news about the association’s activities.
The AIPH International Grower of the Year Awards celebrate the best of the best in ornamental horticulture
Learn moreAIPH’s key aim is to stimulate demand for ornamental trees, plants and flowers worldwide. We are committed to supporting growers in achieving this by protecting and promoting the interests of the industry.
The AIPH’s Global Industry Intelligence Centre (GIIC) is an international hub for industry information and knowledge exchange.
The report contains insights on production and consumption of the floriculture industry in Thailand, imports and exports, and business opportunities
DownloadAIPH Green City activities promote the essential role of plants in creating vibrant urban areas in which people and businesses can thrive.
King Charles views the Kings Rose with David Austin.
In a week that highlighted the UK’s role at the heart of global horticulture, RHS Chelsea Flower Show 2025 stood tall, not only as a showcase of planting excellence but as a reflection of the sector’s far-reaching influence. With the launch of the GreenItaly trade exhibition at the Italian Embassy and renewed focus on international plant movement following the UK-EU Leaders’ Summit, RHS Chelsea Flower Show reaffirmed its place as more than a garden show. It’s a stage where growers, breeders, and innovators from around the world speak a common language—plants.
From moss-draped tea gardens to AI-powered forests, the show delivered a quiet revolution in how plants are imagined and presented. For professional growers, it was a showcase not just of beauty—but of practical, global relevance.
Triumphant designer Kazuyuki Ishihara.
The newly renamed RHS Chelsea Garden of the Year award was presented to veteran Japanese designer Kazuyuki Ishihara for Cha no Niwa – Japanese Tea Garden. Curated to create a moment of quiet reflection and connection, the garden played with elevation and scale to transport viewers through layered green textures, cascading water, and bonsai pine.
“I’m very honoured to receive this wonderful award – I never thought I’d have such a gift,” said Ishihara. “After working here for 20 years, it’s such an honour to have it. Thank you so much.”
Chair of Judges Hayley Skipper praised the garden as “a masterclass… beautifully composed and perfectly scaled,” noting its meticulous attention to foliage and detail. This marks Ishihara’s 14th Chelsea Gold and his first time receiving the top title.
The Avanade Intelligent Garden.
Across the main avenue, The Avanade Intelligent Garden by Tom Massey and Je Ahn offered a distinctly 2025 vision of horticulture—where forest gardens don’t just grow, they respond.
Modelled on the layered structure of a natural woodland, the planting scheme combined resilience and biodiversity. Beneath this calm surface ran a network of sensors—monitoring soil moisture, sap flow, air quality, and weather conditions. The data flowed to the garden’s organically shaped pavilion: a central hub built from fungus-grown mycelium and reclaimed ash, where the digital twin of the garden came to life.
“We didn’t want to design a ‘tech garden’,” explained designer Tom Massey as he guided visitors through the space. “It’s not about putting gadgets on display—it’s about using technology to support natural systems. The sensors are discreet, but what they reveal is powerful. It’s like lifting the lid on how the garden is really doing.”
“The data gives us a clearer, real-time picture of the garden’s health—how it’s growing, how it’s responding to the environment, and how gardeners and maintenance teams can work with it more intelligently.”
Sensor on a black birch: “All my conditions are stable”.
And the real talking point? The plants. Literally. Visitors could simply unearth that data by tapping an app and engaging with the trees. One black birch, when prompted, responded:
“All my conditions are stable. I’m experiencing normal growth today.”
A Chelsea first: a garden where the foliage gives feedback, and the mulch has a mouthpiece.
This wasn’t a tech showcase—it was horticulture made visible. A gentle, data-driven reminder that while the future of growing may be rooted in soil, it’s increasingly guided by insight.
Breeder Alan Postill (left) with his wife Jackie and representatives from Sparsholt College, who brought Alan’s Philadelphus to RHS Chelsea 2025. PHOTO: Sparsholt College.
The 2025 RHS Chelsea Plant of the Year title was awarded to Philadelphus PETITE PERFUME PINK (‘P1’)—a world first for its colour and a triumph of breeding. Developed by the late Alan Postill, one of the UK’s most respected plant breeders, this compact deciduous shrub is the first Philadelphus with a true pink bloom.
Exhibited by Sparsholt College and supplied by Hillier Nurseries, PETITE PERFUME PINK captivated judges with deep pink buds that open into fragrant blooms, fading to pale pink with darker centres. Hardy to -25°C and flowering over six weeks in summer, it offers urban gardeners and growers alike a scented, bee-friendly plant that thrives in sun or part shade with minimal care. Its dense, mound-forming habit (1.5m high and wide) makes it perfect for borders, containers, and small-space planting.
The award celebrates innovation and legacy, marking a poignant recognition of Postill’s lifelong contribution to British horticulture and a plant poised for commercial success.
RHS Chelsea Plant of the Year 2025.
The Plant of the Year shortlist also reflected the show’s growing appetite for bold forms and vibrant palettes. Hosta’ Silly String’ drew curiosity and admiration with its slender, tightly curled blue foliage. At the same time, Salvia TROPICOLOUR SUNRISE (‘Tropog21’) dazzled in sherbet-pink and orange, offering serious pollinator appeal and unmistakable retail potential.
While Cha no Niwa and The Avanade Intelligent Garden stole the headlines, other top accolades included Freedom to Flourish for Best Small Garden and Construction, Seawilding as Best All About Plants Garden, Blue Mind Garden for Best Balcony & Container, and Raymond Evison Ltd’s clematis display earning Best Exhibit in the Great Pavilion—one of 55 Gold medals awarded.
Blue Mind Garden for Best Balcony & Container.
For the professional grower, Chelsea 2025 delivered both signals and substance. Compact flowering shrubs, climate-savvy design, interactive landscapes, and sustainably bred stars are all pointing toward a market increasingly shaped by story, stewardship, and sensory connection.
And while the show is staged on British soil, its ripple effect is international. Whether supplying plants to Europe, design concepts to Asia, or retail-ready novelties to North America, growers are navigating a world where expectations are evolving—faster and more globally than ever before.
This year, the RHS Chelsea Flower Show didn’t just look good—it had something to say. And in one garden, the plants said it themselves—via a web-based app.
