Gardeners' Question Time

Chelsea Flower Show 2026 - Postbag

Gardeners' Question Time

Show Notes

Kathy Clugston and Peter Gibbs are at the Chelsea Flower Show for a special postbag episode of Gardeners' Question Time. From the showground of the world’s most celebrated horticultural event, they're joined by a stellar panel - former Chelsea exhibitor and medal-winning designer Matthew Wilson, one of the world's leading authorities on plant pests and diseases, Pippa Greenwood, and making her press-day debut at Chelsea with GQT, Head Gardener at Birmingham Botanical Gardens, Bethan Collerton. As Kathy and the panel roam the show gardens answering questions submitted by listeners, they catch up with several garden designers behind this year’s show, including Frances Tophill (The RHS and The King’s Foundation Curious Garden), Sarah Fisher and Janice Molyneux (The Sightsavers Garden) and Patrick Clarke (The Children’s Society Garden). They explore the ideas, craftsmanship and planting inspiration behind their Chelsea creations, from sensory container gardens to spaces designed for well-being and connection. Meanwhile, Peter takes the roving reporter mic inside the Great Pavilion, discovering the science behind our gardens, speaking to exhibitors, and uncovering the latest innovations in horticulture and biodiversity research. The panel tackles everything from gardening in challenging coastal conditions, to choosing the right trees for privacy and produce, as well as tips on drying flowers for wedding confetti, and solving the mysteries of struggling container plants and stubborn succulents. Producers: Dan Cocker, Matt Smith and Rahnee Prescod Assistant Producer: William Norton A Somethin' Else production for BBC Radio 4 * If listening on BBC Sounds and you wish to view the plant list, please go to the Gardeners' Question Time website and open this week's episode page.

More from Gardeners' Question Time

Oct 16, 2026

Kathy Clugston presents a special Potting Shed edition of Gardeners’ Question Time, recorded at the Summer Garden Party at RHS Garden Wisley in Surrey. Away from the main stage, visitors drop into the famous GQT potting shed for one-to-one advice from the panel. Dr Chris Thorogood, Marcus Chilton-Jones, Frances Tophill, Matthew Wilson, Matthew Pottage and James Wong help tackle a wide range of gardening dilemmas, from rescuing sun-scorched rhododendrons and reinvigorating star jasmine to choosing climate-resilient hedging and trees for a changing climate. Also, James Wong explores the growing scientific evidence behind gardening’s benefits for our health and wellbeing. Producer: Rahnee Prescod Assistant Producer: William Norton A Somethin' Else production for BBC Radio 4 * If listening on BBC Sounds and you wish to view the plant list, please go to the Gardeners' Question Time website and open this week's episode page.

Oct 9, 2026

Peter Gibbs hosts Gardeners’ Question Time from the Royal Botanic Gardens, Kew. Joining Peter are Ashley Edwards, James Wong and Christine Walkden - a panel with strong Kew connections. They answer questions on when is the latest time you to take cuttings, how to identify male and female ginkgo trees, and how to make the most of winter containers. The panellists also explore the growing appeal of perennial vegetables, discuss indicator plants as guides to soil conditions, and share some of their favourite plant stories - from giant corpse flowers and monkey puzzle trees to the first spring buds of hawthorn. And James Wong goes behind the scenes at Kew’s iconic Palm House to discover how one of the world’s most important glasshouses is being prepared for its next chapter. **NOTE** Comfrey was mentioned during this programme in a discussion about edible plants. Comfrey contains naturally occurring pyrrolizidine alkaloids, which can be harmful to the liver if consumed. Although comfrey has a history of traditional culinary and medicinal use in various parts of the world, consumption is generally not recommended in the UK due to potential health risks, regardless of flower colour or variety Producer: Matt Smith Assistant Producer: William Norton A Somethin' Else production for BBC Radio 4 * If listening on BBC Sounds and you wish to view the plant list, please go to the Gardeners' Question Time website and open this week's episode page.

Oct 2, 2026

Is there a place for sawdust in the veg patch? How best should I trim a mimosa?  Can you share a remedy for my husband’s plant obsession? Peter Gibbs and the GQT team are in Sidmouth answering questions from an audience of keen gardeners. Joining Peter to share their tips, tricks and tales are  plantswoman Anne Swithinbank, pest and disease expert, Pippa Greenwood, and Head of Horticulture at the Royal Parks, Matthew Pottage. The experts discuss wedding cake trees, whether to keep or cull a rhododendron, and the reasons why houseplants may struggle to flower. Producer: Matt Smith Assistant Producer: Will Norton

Sep 25, 2026

As a new series of DIY SOS begins this September, the show joins forces with Gardeners’ Question Time for a collaboration that has more in common than you might think. From Bristol’s Redcatch Community Garden, Kathy Clugston and Nick Knowles are joined by Ashley Edwards, Bethan Collerton and Bunny Guinness. Among the hubbub of the thriving community garden, the panel tackles questions on growing vegetables in a changing climate, reviving underperforming roses and creating accessible gardens for all. The team also explores how community gardening can improve wellbeing, support local wildlife and transform neglected spaces Producer: Matt Smith Assistant Producer: William Norton A Somethin' Else production for BBC Radio 4 * If listening on BBC Sounds and you wish to view the plant list, please go to the Gardeners' Question Time website and open this week's episode page.

Sep 18, 2026

Kathy Clugston hosts the second of the Gardeners’ Question Time Summer Garden Party specials from RHS Garden Wisley in Surrey. Joining Kathy are Pippa Greenwood, Matthew Wilson, Marcus Chilton-Jones and Dr Chris Thorogood, taking questions from an audience of keen gardeners gathered beneath the marquee at the Wisley Flower Show. The panel share the gardening lessons they wish they’d learned sooner, help a young gardener who has successfully grown a clementine from pips and work on solving the mystery of some unusually shaped cacti. There are also recommendations for planting up a sunny pergola, making the most of an unheated greenhouse through winter, and advice on how to treat against some unknown pests leaving marshmallow like residues on a well loved Hydrangea. And to conclude, the panel almost break into song as they are asked if there is any music that inspires them to garden. Producer: Alison Vernon-Smith Assistant Producer: William Norton A Somethin' Else production for BBC Radio 4 * If listening on BBC Sounds and you wish to view the plant list, please go to the Gardeners' Question Time website and open this week's episode page.

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