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Postbag Edition: Seaton Delaval Hall

Kathy Clugston and the panel choose roses for a shaded memorial bed, investigate the collapse of a wisteria and unpick the mystery of a white flag iris that changed colour.

Kathy Clugston and the GQT team visit the Seaton Delaval Hall in Newcastle, to answer questions from the GQT postbag.

Today, the panel helps choose roses for a shaded memorial bed, investigates the sudden collapse of a once鈥慻lorious wisteria, and unpicks the mystery of a white flag iris that decided to flower again in autumn, but this time in blue.

Kathy is joined by Matthew Wilson, Bethan Collerton and Dr Chris Thorogood.

Alongside these questions, Sarah Peilow, Head Gardener at Seaton Delaval Hall takes us on a tour of the Parterre and the South East Garden.

Producer: Dan Cocker
Assistant Producer: Suhaar Ali

A Somethin' Else production for 麻豆社 Radio 4.

Available now

42 minutes

Last on

Sunday 14:00

Featured

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Plant List

Q1- 鈥 Which roses will thrive in a west鈥慺acing, shaded 8脳3ft bed as a memorial to my late husband, who loved roses?

听(2鈥32鈥)

Matthew Wilson 鈥

Rosa,听Desdemona听('Auskindling'PBR) (HM) 鈥 rose

Bethan Collerton 鈥

Rosa听'Rambling Rector'听 - rose 'Rambling Rector'

Dr Chris Thorogood -

颅颅颅搁辞蝉补听Queen of Sweden听('Austiger'PBR) (S) - rose [Queen of Sweden]

Rosa 'Florence Mary Morse'

Sarah Peilow, Head Gardener at Seaton Delaval Hall -

Rosa听Tottering-by-Gently听('Auscartoon'PBR) (S) - rose [Tottering-by-Gently]

Rosa听Kew Gardens听('Ausfence'PBR) (S) - rose [Kew Gardens]

Q2- After my Hermione rose was accidentally cut back to ground level, leaving only old wood, is there any hope it will recover? (6鈥47鈥)

Q3 - After finally raising a few Echium from seed, my small garden has now gone from one extreme to the other and although the bees love it, the garden is now overwhelmed by their self鈥憇eeded offspring. What should I do, it feels wrong to remove plants that were once so hard to grow? (10鈥11鈥)

Q4 - Can I successfully grow watercress on my chalky, free鈥慸raining, full鈥憇un allotment using water butts and a mains鈥慺ed trough? (12鈥41鈥)

FEATURE听 - Sarah Peilow takes us on a tour of the Parterre at Seaton Delaval Hall

(15鈥39鈥)

Berberis,听Barberry

Santolinachamaecyparissus, lavender cotton

Nepeta, Catmint

Q5 - Our mature wisteria on a sunny south鈥憇outhwest wall suddenly wilted and died last May. What caused this, and what could we plant in its place that grows 2m tall, spreads 3鈥4m, stays close to the wall, and ideally is evergreen? (18鈥04鈥)

Dr Chris Thorogood -

Ceanothus, Californian lilac

Campsisradicans, trumpet vine

Q6 鈥 鈥奍 have a Santolina听with attractive aromatic foliage, but it has only flowered twice in four years. This year it has one flower. By September, it receives sun two to three hours in the morning and the same in the afternoon. Is it worth moving it to a sunnier position?

Santolinachamaecyparissus, lavender cotton

Bethan Collerton 鈥

Ilex crenata, Japanese holly

Q7 - My white flag iris bloomed normally in early summer, but in October it produced new flower spikes that have opened mid鈥憈o鈥憄ale blue instead of white. Why has this happened?

Matthew Wilson 鈥

Irissibirica, Siberian flag

Feature 2 -听 Sarah Peilow shows us the South East Garden at Seaton Delaval Hall

(29鈥47鈥)

Betulanigra, black birch

Q8 鈥 I planted several hellebores last autumn, and while most are fine, one variety has suddenly dropped all its leaves right at the base. Three out of five plants of that type have done it. The leaves themselves look perfectly healthy, the nearby plants are fine, and I can鈥檛 find any pests.

What on earth has happened, and how do I stop it happening again?

Helleborus, hellebore

Q9 - My seven鈥憏ear鈥憃ld winter鈥慺lowering cherry has developed holes in the leaves for two years running, and last spring鈥檚 blossom was sparse and disappointing. I feed it with chicken pellets and water as needed. What鈥檚 causing this, and how can I put it right?

Q10 - My cactus has finally outgrown his happy windowsill. I鈥檝e had him since he was a tiny wee plant, and he flowers beautifully every summer. I鈥檇 like to rehome him, but also take a couple of cuttings to grow on. How should I go about it?

Schlumbergera, Christmas cactus

听Q11- English gardeners often refer to grit, but here in the US we don't have that term. We have compost leaf mold and many other terms, but no grit that I've ever seen or heard of at a garden supply store. Can you tell me the closest thing to grit that sold in America?

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