LONDON — For over a century, securing a stand at the Royal Horticultural Society’s Chelsea Flower Show was the horticultural world’s highest honor. Now, that gilt-edged invitation is increasingly viewed by some exhibitors as a costly burden. A growing backlash over the RHS’s strict peat-free mandate is prompting nurseries to withdraw, publicly protest, or walk away entirely, exposing a deep rift between the institution’s environmental ambitions and the gritty realities of commercial plant production.
The Policy Behind the Backlash
The RHS first announced in 2021 that by the end of 2025, all plants displayed at its shows must be “No New Peat”—grown either in fully peat-free compost or in peat extracted before that deadline. The policy is rooted in science: peatlands cover only 3% of the Earth’s surface yet store more carbon than all the world’s forests combined. In the UK, an estimated 75% of peatlands are degraded, meaning they now release carbon instead of sequestering it.
The RHS made its own retail operations peat-free this January and has invested roughly £2.5 million over the past decade into peat-free research and grower workshops. But the organization has been left stranded by a failure in government follow-through. A planned retail peat ban collapsed after a change in administration, and a promised ban on commercial peat use remains stalled.
Facing what RHS Director General Clare Matterson described as a “legislative black hole,” the society was forced to soften its own rules earlier this year. Under a temporary concession, nurseries in the Great Pavilion may now use up to 40% “peat starter plants”—those begun in peat plugs before being transferred to peat-free media—until 2028.
Growers Say Enforcement Is Unworkable
Even with that flexibility, the policy has proved a logistical nightmare for the trade. Growers supplying show gardens have told industry outlets that fully tracing a plant’s peat history is nearly impossible unless it spent its entire life in one nursery—a rarity in an era of layered, international supply chains where much young stock is imported from abroad.
The friction has already cost Chelsea some of its regulars. Contract grower Creepers Nursery announced it would take a year off from supplying the show, and at least one other nursery has withdrawn entirely, citing the strain of traceability demands. Longtime peony specialist Kelways has also questioned whether the policy is workable as currently written.
A Superman-Sized Protest
The dispute erupted into public view this year when award-winning exhibitor Tim Penrose said the RHS refused him a stand because he hadn’t attended the society’s anti-peat seminars and was not deemed sufficiently committed to the policy. Rather than fade away, Penrose appeared at Chelsea in a Superman costume, telling reporters only a superhero could save the show from its own bureaucracy. His stunt crystallized a growing sense that the rules are being unevenly enforced.
Financial Pressures Mount
The peat row is unfolding against a backdrop of financial strain. The RHS recorded a net loss of £8.1 million for the year ending January 2025, though unpublished recent figures show a 7% rise in income and a £4.8 million cash profit. More troubling for the show’s future, an anonymous philanthropic couple who had poured over £23 million into Chelsea over the years ended their support this year.
Meanwhile, a rival event backed by The Newt in Somerset has launched with free entry for under-16s—a direct, if cordial, challenge to Chelsea’s dominance of the show calendar.
Critics argue the peat dispute is symptomatic of a broader institutional drift. Some designers and writers have accused the RHS of slow-walking modernization on organic growing, gender representation among top garden designers, and sustainable materials, all while continuing to showcase elaborate, corporate-sponsored show gardens whose own carbon footprints face scrutiny.
A Messy Transition Ahead
None of this means Chelsea is imploding. The RHS points to genuine progress: all show gardens, judged floral displays, and trade stands at its 2026 shows are now required to be “No New Peat,” and the society continues to fund alternatives research.
But the exhibitor departures and public friction suggest the transition is proving far messier than the tidy deadlines first announced in 2021. For an institution whose identity rests on horticultural excellence and tradition, the peat question has become an unusually public test of how far the RHS can push its membership toward sustainability before some of them simply walk away.
For readers: The RHS maintains a list of accepted peat-free alternatives and offers workshops for growers navigating the transition. Nurseries uncertain about compliance can contact the society’s peat-free advisory team for guidance.