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From the Archive: Microclimate

Kathy Clugston delves into the GQT archive to explore one of Britain鈥檚 most intriguing gardening phenomena: microclimates.

Kathy Clugston delves into the GQT archive to explore one of Britain鈥檚 most intriguing gardening phenomena: microclimates.

Travelling across the British Isles, the programme uncovers how local conditions shape what gardeners can grow.
We鈥檒l hear stories from the subtropical gardens of Cornwall and the Isles of Scilly, to the urban heat islands of London and the dry conditions of East Anglia before ending up in one gardener's rather chilly frost pocket.

Along the way, the panel suggests plants for coastal walls, city streets and challenging shade, explore exotic species thriving in unexpected places, and offer advice on everything from tropical-style planting to sweetcorn cultivation.

Plus, a visit to St Michael鈥檚 Mount, and Derek Jarman's garden in Dungeness.

Producer: Rahnee Prescod
Assistant Producer: William Norton

A Somethin' Else production for 麻豆社 Radio 4

* If listening on 麻豆社 Sounds and you wish to view the plant list, please go to the Gardeners' Question Time website and open this week's episode page.

Tickets are available for the 麻豆社 Radio 4 Gardeners' Question Time Summer Party 2026 held at RHS Garden Wisley on Saturday 5th September.
Information and ticket details can be accessed via: https://www.rhs.org.uk/gardens/wisley/whats-on/gardeners-question-time-summer-garden-party

Available now

42 minutes

Featured

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Plant List

Q1 鈥� 鈥淲hat are the best plants for a coastal dry-stone wall?鈥� (Penzance, Cornwall, 2023)

James Wong

鈥� Sedum spp., stonecrop鈥� Sempervivum spp., houseleek鈥� 脳 Semponium cultivars, semponium鈥� Aeonium spp., aeonium

Chris Beardshaw

鈥� Blechnum spicant, hard fern鈥� Polypodium vulgare, common polypody鈥� Anthemis cupaniana 'Nana', anthemis 'Nana'鈥� Tulbaghia spp., society garlic鈥� Viola odorata, sweet violet听

Feature 鈥� Microclimates at St Michael's Mount (Penzance, Cornwall, 2023)

Jack Beasley

East Terraces

鈥� Aloe polyphylla, spiral aloe鈥� Restios (Restionaceae family)鈥� Protea spp., protea鈥� Gazania spp., gazania

Walled Garden

鈥� Medicago arborea, tree medic

Sheltered Garden

鈥� Strelitzia reginae, bird of paradise听

Feature 鈥� Tresco Abbey Garden (Isles of Scilly, 2017)

Mike Nelhams

鈥� Melaleuca quinquenervia, Paperbark tree听鈥� Eucalyptus spp., eucalyptus鈥� Sparrmannia africana, African hemp鈥� Luma apiculata (syn. Myrtus luma), Chilean myrtle鈥� Clethra arborea, lily-of-the-valley tree鈥� Metrosideros excelsa, New Zealand Christmas tree听

Q2 鈥� 鈥淢y tropical-style plants were damaged by frost. What should I do?鈥� (Isles of Scilly, 2017)

Question context (Mike Nelhams, Bob Flowerdew, James Wong)

鈥� Melianthus major, giant honey flower鈥� Tetrapanax papyrifer 'Rex', rice-paper plant 'Rex'鈥� Paulownia tomentosa, foxglove tree听

Q3 鈥� 鈥淐an the panel suggest street trees for London?鈥� (Brockley, London, 2017)

James Wong

鈥� Olea europaea, olive鈥� Pittosporum spp., pittosporum鈥� Albizia julibrissin, Persian silk tree

Christine Walkden

鈥� Koelreuteria paniculata, golden rain tree鈥� Crataegus persimilis 'Prunifolia'., plum-leaved thorn鈥� Spathodea campanulata, African tulip tree鈥� Albizia julibrissin, Persian silk tree

Pippa Greenwood

鈥� Pittosporum spp., pittosporum听

Q4 鈥� 鈥淲hat can I plant with roses for autumn and winter interest?鈥� (Black Country Living Museum, 2019)

Question context

鈥� English roses (Rosa cultivars)鈥� Salvia spp., salvia鈥� Nepeta spp., catmint鈥� Achillea spp., yarrow

Matthew Pottage

鈥� Callicarpa 'Imperial Gem', beautyberry 'Imperial Gem'鈥� Cotinus obovatus, American smoketree鈥� Colchicum 'Atrorubens', autumn crocus 'Atrorubens'

Pippa Greenwood

鈥� Autumn-flowering crocuses (Crocus spp.)鈥� Colchicum spp., autumn crocus鈥� Echinacea spp., coneflower鈥� Rudbeckia spp., rudbeckia鈥� Sedum spp., stonecrop听

Q5 鈥� 鈥淲hat should I grow in urban street planters?鈥� (London)

Marcus Chilton-Jones

鈥� Euonymus japonicus 'Aureus Pictus', golden euonymus鈥� Cordyline australis, cabbage palm鈥� Malus spp., apple/crab apple鈥� Agapanthus spp., agapanthus鈥� Choisya ternata, Mexican orange blossom鈥� Aucuba japonica, spotted laurel鈥� Camellia spp., camellia

James Wong

鈥� Echium spp., echium鈥� Brugmansia spp., angel's trumpet鈥� Citrus spp., citrus鈥� Citrus junos, yuzu

Connell Maguire

鈥� Monarda spp., bee balm听

Feature 鈥� Derek Jarman's Garden at Prospect Cottage (Dungeness, Kent, 2017)

Amanda Cottrell

鈥� Rosa canina, dog rose鈥� Santolina spp., cotton lavender鈥� Cistus spp., rock rose鈥� Wild valerian (Valeriana species not confirmed)鈥� Crambe maritima, sea kale鈥� Eschscholzia californica, Californian poppy鈥� Ulex spp., gorse听

Q6 鈥� 鈥淐an baby sweetcorn be grown successfully?鈥� (Norfolk & Norwich Horticultural Society, 2004)

Pippa Greenwood

鈥� Baby sweetcorn cultivars鈥� Zea mays, sweetcorn

Bob Flowerdew

鈥� Saccharum officinarum, sugar cane听

Q7 鈥� 鈥淲hat can I grow in a shady, wet frost pocket?鈥� (Tadworth, Surrey)

Quesition context

鈥� Malus domestica, apple

Bob Flowerdew

鈥� Dianthus 'Mrs Sinkins', pink 'Mrs Sinkins'

Bunny Guinness

鈥� Rosa 'Jacqueline du Pr茅', rose 'Jacqueline du Pr茅'鈥� Agapanthus spp., agapanthus鈥� Ilex spp., holly鈥� Taxus baccata, yew鈥� Buxus sempervirens, box鈥� Pulmonaria spp., lungwort

听

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