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Clarkston: Peach Tress, Pirate Sheds and Late Summer Pruning

Kathy Clugston is joined by James Wong, Kirsty Wilson and Bethan Collerton at Clarkston Halls, to answers all your gardening questions.

Kathy Clugston and the panel visit Clarkston Halls near Glasgow.

Joining Kathy are botanist James Wong, Birmingham Botanical Gardens鈥� Head Gardener Bethan Collerton, and Balmoral鈥檚 Head of Gardens Kirsty Wilson.

The panel answers questions on overwintering anemone corms, revitalising a gloomy shaded corner beneath mature lime trees, and whether an unheated Scottish greenhouse is suitable for growing peaches.

They also discuss a mysteriously weeping houseplant, what might be causing a Japanese maple to decline, and why healthy nasturtiums can sometimes produce plenty of leaves but no flowers.

Plus, Kirsty shares some late-summer pruning tips, and the panel reveal the gardening advice they would give to anyone just starting out.

Producer: Alison Vernon-Smith
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

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42 minutes

Featured

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Plant List

Introduction

Plants mentioned by Kathy Clugston

鈥� Pseudotsuga menziesii, Douglas fir鈥� Rosa spp., rose鈥� Tree ferns (various species)听

Q1 鈥� 鈥淪hould I lift and store anemone corms over winter?鈥� (01鈥�27鈥�)

Question context

鈥� Anemone coronaria, poppy anemone

Kirsty Wilson

鈥� Anemone coronaria, poppy anemone鈥� Dahlia spp., dahlia

Bethan Collerton

鈥� Anemone nemorosa, wood anemone鈥� Dahlia spp., dahlia

James Wong

鈥� Anemone coronaria, poppy anemone鈥� Anemone nemorosa, wood anemone鈥� Japanese anemones (Eriocapitella species)听

Q2 鈥� 鈥淲hy is my Zebrina houseplant 鈥榳eeping鈥�?鈥� (5鈥�33鈥�)

James Wong

鈥� Alocasia zebrina, zebra elephant's ear鈥� Monstera spp., Swiss cheese plant听

Q3 鈥� 鈥淲hat should I plant in a permanently shaded, clay-filled corner beneath lime trees?鈥� (8鈥�36鈥�)

Question context

鈥� Tilia 脳 europaea, common lime

Kirsty Wilson

鈥� Hydrangea paniculata 鈥楧iamant Rouge鈥�, panicled hydrangea 鈥楧iamant Rouge鈥欌�� Epimedium spp., barrenwort鈥� Camellia spp., camellia鈥� Rhododendron spp., rhododendron

James Wong

鈥� Tree ferns (various species)鈥� Acer palmatum, Japanese maple

Bethan Collerton

鈥� Rhododendron spp., rhododendron鈥� Camellia spp., camellia鈥� Anemone blanda, Grecian windflower鈥� Anemone nemorosa, wood anemone听

Q4 鈥� 鈥淲hy is one of my Japanese maples declining?鈥�(13鈥�51鈥�)

鈥� Acer palmatum, Japanese maple听

Q5 鈥� 鈥淐ould I grow a peach tree in an unheated Scottish greenhouse?鈥�(18鈥�09鈥�)

Bethan Collerton

鈥� Prunus persica, peach鈥� Vitis vinifera, grapevine

James Wong

鈥� Prunus persica 'Saturne' (F) Peach 鈥楽aturne鈥櫶�� Prunus persica 'Sanguinole' (F) Blood peach听

Feature 鈥� Late Summer Pruning with Kirsty Wilson(23鈥�25鈥�)

Climbers and shrubs

鈥� Wisteria spp., wisteria鈥� Lavandula spp., lavender鈥� Philadelphus spp., mock orange鈥� Deutzia spp., deutzia鈥� Weigela spp., weigela鈥� Climbing roses (Rosa spp.)鈥� Rambling roses (Rosa spp.)

Herbaceous perennials

鈥� Hardy geraniums (Geranium spp.)鈥� Alchemilla mollis, lady's mantle鈥� Geum spp., geum鈥� Nepeta spp., catmint

Hedges

鈥� Fagus sylvatica, beech鈥� Buxus sempervirens, box鈥� Ligustrum spp., privet鈥� Taxus baccata, yew

Fruit trees

鈥� Malus domestica, apple鈥� Prunus domestica, plum鈥� Pyrus communis, pear鈥� Prunus avium/Prunus cerasus, cherry

Soft fruit

鈥� Rubus idaeus, raspberry鈥� Ribes uva-crispa, gooseberry鈥� Ribes rubrum, redcurrant鈥� Ribes nigrum, blackcurrant听

Q6 鈥� 鈥淲hat is the science behind roots forming on cuttings?鈥� (28鈥�16鈥�)

Question context

鈥� Begonia spp., begonia鈥� African violet (Streptocarpus sect. Saintpaulia)听

Q7 鈥� 鈥淲hat tree would make a good gift for a garden?鈥�(31鈥�35鈥�)

Bethan Collerton

鈥� Ficus carica, fig

James Wong

鈥� Amelanchier spp., amelanchier

Kirsty Wilson

鈥� Sorbus 鈥楯oseph Rock鈥�, rowan 鈥楯oseph Rock鈥欌�� Wisteria spp., wisteria (trained as a standard)听

Q8 鈥� 鈥淲hy do my nasturtiums have lots of leaves but no flowers?鈥� (34鈥�15鈥�)

James Wong

鈥� Tropaeolum majus, nasturtium听

Q9 - Advice for New Gardeners (36鈥�04鈥�)

Bethan Collerton

鈥� Understand your garden conditions before choosing plants.鈥� Experiment and don't be afraid to try things that might not work.鈥� Learn through experience and accept that not every attempt will succeed.鈥� "The right time is when you've got time."

Kirsty Wilson

鈥� Build a compost bin from the start.鈥� Improve and understand your soil before spending money on plants.鈥� Make use of homemade compost and leaf mould.鈥� Gardening requires patience and develops over years rather than instantly.

James Wong

鈥� Don't be intimidated by gardening rules or technical knowledge.鈥� Learn through experimentation and accept failure as part of gardening.鈥� Most gardeners, including experts, kill plants while learning.鈥� "There are no mistakes in gardening, only experiments."

听

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