Main content

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’ Head Gardener Bethan Collerton, and Balmoral’s 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 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.

Tickets are available for the BBC 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

  • .

Plant List

Introduction

Plants mentioned by Kathy Clugston

• Pseudotsuga menziesii, Douglas fir• Rosa spp., rose• Tree ferns (various species) 

Q1 – “Should I lift and store anemone corms over winter?” (01’27”)

Question context

• Anemone coronaria, poppy anemone

Kirsty Wilson

• Anemone coronaria, poppy anemone• Dahlia spp., dahlia

Bethan Collerton

• Anemone nemorosa, wood anemone• Dahlia spp., dahlia

James Wong

• Anemone coronaria, poppy anemone• Anemone nemorosa, wood anemone• Japanese anemones (Eriocapitella species) 

Q2 – “Why is my Zebrina houseplant ‘weeping’?” (5’33”)

James Wong

• Alocasia zebrina, zebra elephant's ear• Monstera spp., Swiss cheese plant 

Q3 – “What should I plant in a permanently shaded, clay-filled corner beneath lime trees?” (8’36”)

Question context

• Tilia × europaea, common lime

Kirsty Wilson

• Hydrangea paniculata ‘Diamant Rouge’, panicled hydrangea ‘Diamant Rouge’• Epimedium spp., barrenwort• Camellia spp., camellia• Rhododendron spp., rhododendron

James Wong

• Tree ferns (various species)• Acer palmatum, Japanese maple

Bethan Collerton

• Rhododendron spp., rhododendron• Camellia spp., camellia• Anemone blanda, Grecian windflower• Anemone nemorosa, wood anemone 

Q4 – “Why is one of my Japanese maples declining?”(13’51”)

• Acer palmatum, Japanese maple 

Q5 – “Could I grow a peach tree in an unheated Scottish greenhouse?”(18’09”)

Bethan Collerton

• Prunus persica, peach• Vitis vinifera, grapevine

James Wong

• Prunus persica 'Saturne' (F) Peach ‘Saturne’ • Prunus persica 'Sanguinole' (F) Blood peach 

Feature – Late Summer Pruning with Kirsty Wilson(23’25”)

Climbers and shrubs

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

Herbaceous perennials

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

Hedges

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

Fruit trees

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

Soft fruit

• Rubus idaeus, raspberry• Ribes uva-crispa, gooseberry• Ribes rubrum, redcurrant• Ribes nigrum, blackcurrant 

Q6 – “What is the science behind roots forming on cuttings?” (28’16”)

Question context

• Begonia spp., begonia• African violet (Streptocarpus sect. Saintpaulia) 

Q7 – “What tree would make a good gift for a garden?”(31’35”)

Bethan Collerton

• Ficus carica, fig

James Wong

• Amelanchier spp., amelanchier

Kirsty Wilson

• Sorbus ‘Joseph Rock’, rowan ‘Joseph Rock’• Wisteria spp., wisteria (trained as a standard) 

Q8 – “Why do my nasturtiums have lots of leaves but no flowers?” (34’15”)

James Wong

• Tropaeolum majus, nasturtium 

Q9 - Advice for New Gardeners (36’04”)

Bethan Collerton

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

Kirsty Wilson

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

James Wong

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

Broadcasts

  • Fri 14 Aug 202615:00
  • Sun 16 Aug 202614:00

Six of GQT’s naughtiest gardening innuendos

Six of GQT’s naughtiest gardening innuendos

When Gardeners' Question Time got mucky.

Podcast