Postbag Edition: RHS Chelsea Flower Show
Kathy Clugston, Peter Gibbs and the GQT team dip into the postbag to answer your gardening questions at the Chelsea Flower Show.
Kathy Clugston and a panel of green-fingered gurus, Kirsty Wilson, Pippa Greenwood, and Dr Chris Thorogood, explore the spectacular Chelsea Flower Show!
Meanwhile on the vibrant main avenue, roving reporter Peter Gibbs explores gardens shaped by climate challenges. He steps into the thought-provoking Save for a Rainy Day Garden to chat with designer Baz Granger about clever water-saving ideas. Then, he ventures into the lush creativity of the Hospitalfield Arts Garden, where he meets celebrated garden designer Nigel Dunnett for a conversation on art, ecology, and sustainable planting.
Producer: Dom Tyerman
Assistant Producer: Rahnee Prescod and Suhaar Ali
A Somethin' Else production for BBC Radio 4
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Plant List
Questions and timecodes are below. Where applicable, plant names have been provided.
Q - Why have my 10-year-old Camelia gotten developed smaller flowers this year? (02'05")
Q - Has my very large sycamore tree been stunting the growth of my old flowering cherry tree? (04'32")
Q - I wondered if I could plant that’s low level and creeping, which would reduce weeding and could cope with occasionally being walked on? (09'20")
Joe –
Mentha requienii, corsican mint
Thymus vulgaris, common thyme
Wild carrots
Poppies
Pippa Greenwood–
Armeria maritima, thift
Kirsty Wilson-
Erigeron, fleabane
Thymus 'Jekka', thyme ‘jekka’
Dr Chris Thorogood –
Atriplex halimus, tree purslane
Q – I’ve been experimenting with a variety of annuals, small trees, herbs, strawberries, and tomatoes. Should I be replacing all the compost in the tubs? (12'45")
Feature – Peter Gibbs visits the ‘Save For A Rainy Day” garden, where he speaks to garden designer Baz Granger (15’55”)
Baz Granger –
Stachys byzantine, lamb’s ear
Achillea millefolium, common yarrow
Oreomecon nudicaulis, Icelandic poppy
Linum perenne, perennial flax
Q- I got a puppy last August and I want to redesign my garden this year to be dog friendly. What advice can the panel offer? (22'30")
Q - We've had sporadic appearing orange patches. They’re now a permanent feature of the lawn. Any ideas on what could be causing this? (24'35")
Feature – Hospitalfield Arts Garden, where he meets celebrated garden designer Nigel Dunnett for a conversation on art, ecology, and sustainable planting (26’24”)
Nigel Dunnett-
Gypsophila repens 'Rosea', creeping baby’s breath ‘Rosea’
Arrhenatherum elatius, false oat grass
Q- We have a raised bed in our back garden, about 30 meters long with mature trees – what could grow here? (32'06")
Kirsty –
Spinach
lettuce
radishes
Bunny Guinness-
Polystichum setiferum, soft shield fern
Valeriana officinalis, common valerian
Euphorbia, spurge
Chris Thorogood-
Salvia yangii (Pe), Russian sage
Iris germanica, bearded iris
Iris 'Superstition' (TB), iris ‘Superstition’
Q - What advice could you give to supermarkets to keep their plants fresh and saleable? (37'00")
Broadcasts
- Fri 23 May 2025 15:00BBC Radio 4
- Sun 25 May 2025 14:00BBC Radio 4
Join us at RHS Garden Wisley and be part of the show as we host the BBC Radio 4 Gardeners’ Question Time Summer Garden Party
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Gardeners' Question Time
Horticultural programme featuring a group of gardening experts

