Phyllis Court: White Fly, River Thames and Favourite Gardens
How does the River Thames impact my garden? Why has there been so much whitefly this year? What's the panel's favourite garden? Peter Gibbs and a panel answer these and more.
Might our otherwise polluted River Thames have a positive impact on my garden? Why has there been so much whitefly this year? Do the panel have a favourite garden they’ve visited?
Peter Gibbs and a panel of green-fingered gurus head to the Phyllis Court Club in Henley-on-Thames, where a lively audience of passionate gardeners awaits answers to their most pressing plant problems.
Joining Peter are pest and disease specialist Pippa Greenwood, head gardener Matthew Pottage, and the ever-enthusiastic plantswoman Christine Walkden.
Later, Johnny ‘Hot Stuff’ Mayard discusses how he grows chillies in his polytunnel that are used for his hot sauce.
Senior Producer: Dan Cocker
Junior Producer: Rahnee Prescod
Assistant Producer: William Norton
Assistant Producer: Suki Glockling
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 – Might our otherwise polluted river have some positive impact somehow in my garden? (01’42”)
Q – Why has there been so much whitefly this year? And are they damaging to the plants (05’27”)
Q – Which shrubs, perennials and bulbs do you suggest I plant to provide really good spring to autumn interest? (07’41”)
Matthew Pottage –
Fritillaria, fritillary
Fritillaria imperialis, crown imperial
Narcissus, daffodil
Narcissus 'Thalia' (5), daffodil ‘Thalia’
Rosa xanthina 'Canary Bird' (S), rose ‘Canary Bird’
Rosa Morning Mist ('Ausfire') (S), rose [Morning Mist]
Symphyotrichum lateriflorum 'Lady in Black', calico aster ‘Lady in Black’
Galtonia candicans, summer hyacinth
Hibiscus moscheutos, common rose mallow
Christine Walkden –
Hesperantha coccinea, crimson flag lily
Autumn cyclamen
Anemone
Chionodoxa, caper hyacinth
Puschkinia
Pippa Greenwood –
Galanthus, snowdrops
Eranthis hyemalis, winter aconite
Iris reticulata, early bulbous iris
Epimedium
Herbaceous geraniums
Crocus
Colchicum autumnale, meadow saffron
Crocus nudiflorus, autumn crocus
Crocus vernus, spring crocus
Q – How do I remove Staghorn sumac from my garden? (14’45”)
Feature – Johnny ‘HoT Stuff’ Mayard discusses how he grows chillies in his polytunnel that are used for his hot sauce (18’14”)
Q – How do I stop pigeons and squirrels for getting into my bird feeder? (23’10”)
Q – What plants could I have in pots that could fit on my south facing balcony? (26’05”)
Matthew Pottage –
Salvia mexicana, mexican sage
Salvia 'Hot Lips', sage 'Hot Lips'
Osteospermum, African Daisy
Callistemon citrinus, crimson bottlebrush
Callistemon citrinus 'Splendens', crimson bottlebrush 'Splendens'
Callistemon Hot Pink ('Kkho1'PBR), bottlebrush [Hot Pink]
Callistemon salignus Honey Pot ('Hutneezz'), bottlebrush [Honey Pot]
Pippa Greenwood –
Agapanthus, african lily
Miniature daffodils
Crocus
Christine Walkden –
Lathyrus odoratus, sweet peas
Ipomoea lobata, spanish flags
Eccremocarpus scaber, chilean glory flower
Q – How do I go about growing King Edward potatoes? (31’12”)
Q – Do the panel have a favourite garden they’ve visited or is there a real/fictional garden they’d love to visit? (35’22”)
Broadcasts
- Fri 31 Oct 2025 15:00BBC Radio 4
- Sun 2 Nov 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

