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Sustainable redesign: how the Iris Garden at Nunnington Hall has been reimagined

Two metal sculptures featuring prominently in the newly redesigned Iris Garden
The newly redesigned Iris Garden is now open to visitors at Nunnington Hall | © National Trust / Andrew Davies

The Iris Garden is one of the few historical gardens remaining at Nunnington Hall. Thanks to a generous gift from the Estate of Mrs Gertrude Mary Looi, we have had the opportunity to breathe new life into this space with a fresh design that pays homage to the original vision, while still featuring a collection of irises.

The garden you’ll have previously seen on visits descends from a design believed to have been laid out by Mrs Fife, the former owner of the hall, in the 1920s and restored to something of its former appearance by the National Trust in 1989.

This area has always been a much-loved feature of the garden, however as the years have passed the plants were no longer performing at their best, maintenance had become increasingly challenging, and the garden was looking tired.

The redesign has included making the area a beautiful, accessible and biodiverse garden, which champions the Iris Genus. Most of all, it’s a tranquil space in which to sit, reflect and be at one with nature. Just like the wider Nunnington garden, nature has been central to all decision-making on the project, and the space is environmentally sustainable and wildlife friendly.

A new season for the Iris Garden

The Iris Garden project was led by Project Gardener, Caroline Bosher, and Head Gardener, Nick Fraser. They worked with the award-winning garden designer, Kristina Clode, to design a garden that is regenerative and a boost for biodiversity.

Kristina is a Registered Member of the Society of Garden Designers and has twice won their prestigious ‘Design for the Environment Award’.

Read more about the team and how the project progressed in the ‘Latest updates’ below.

Latest updates

May 2025

Iris Garden now open

The new garden was officially opened on Monday 12 May, with long-term garden volunteer Barbara Potter cutting the ribbon. There will be a total of 559 irises in the garden, with 46 different varieties to ensure there are irises flowering throughout the year. This offers you something different to see each time you visit. In total, there will be an incredible 2,227 plants in the garden! We’re all now looking forward to sharing the garden with visitors and seeing it emerge over the coming months, as nature continues to transform the space.

Garden designer Kristina Clode, Head Gardener Nick Fraser and Project Gardener Caroline Bosher with garden volunteer Barbara Potter cutting a red ribbon in front of the new garden.
The Iris Garden team with garden volunteer, Barbara Potter, who has tended to the garden for over a decade. | © National Trust/Andrew Davies

Bringing the past into the future

By the time the National Trust took over Nunnington Hall, the Iris Garden had become overgrown and difficult to identify. ​In 1989 it was restored to something of its former appearance. 

The stone paths were uncovered and re-laid, a central urn similar to the one seen in old photos was added, and the beds were planted with irises known to be popular during the original era – primarily dwarf and tall bearded.​

Keeping up the maintenance of the iris garden had become more difficult in recent years and the stone paving was worn and uneven. Many of the hedges and trees had outgrown the garden, and the irises weren't performing as well as they used to.

Why redesign the Iris Garden?​

The Iris Garden is a much-loved area of the garden, however it looked tired and had a neglected appearance even after periods of intense maintenance. The irises offered a very short season of display, there was limited seating, and the paths were worn and uneven. The single path entrance and exit points resulted in visitors passing by, barely pausing for a look.​

Thanks to the generous gift from the Estate of Mrs Gertrude Mary Looi, we had an opportunity to address the situation and reimagine this space with a more modern and innovative design, whilst still retaining historical integrity and influences from previous owners and past designs.​

The new design needed to delight visitors with an invitation to engage and explore, improve accessibility, offer more seating, and adapt to changing environmental and climate conditions. It needed to offer a beautiful garden full of horticultural interest for everyone to enjoy throughout the seasons.​

What do we want to achieve?

A showcase of climate-positive gardening ideas

Nunnington Hall is one of the Trust’s flagship organic gardens, run in harmony with nature for over 22 years. We can now build on this with the use of innovative sustainable garden design practices. The new design will consider the impact of our choices with an aim to:​​

  • Reuse existing materials ​

  • Select plants that work with a changing climate and provide food and habitat for wildlife

  • Source UK-grown peat-free plants from suppliers who meet our plant biosecurity requirements (Plant Health certified)​

  • Harvest rainwater​ to top up pond level during months of low rainfall

  • Ensure ongoing garden maintenance is pollution-free through use of electric machinery​

A better experience for everyone

Two new entry points have been added to encourage visitors to explore the garden. Crumbling paths were replaced with smooth surfaces, and more seating has been added so visitors can spend longer relaxing in this space. A bold selection of plants will provide interest all year round, with something new to see each visit.​

A ‘garden gallery’

Nunnington Hall works with artists from around the UK to host a wide range of exhibitions. This concept will be extended into the Iris Garden with a series of sculpture plinths for future displays.​

Mrs Fife and grandson Andrew in the Iris Garden in 1943
Susan Fife and son Andrew in the Iris Garden | © National Trust

More about the project donor

The redesign works of the Iris Garden would not have been possible without the generous gift to the National Trust from the Estate of Mrs Gertrude Mary Looi.

Speaking on behalf of the Estate, Mrs Looi's grandson, Tony Sofroniou, said:

“Gertrude Looi (nee Marsh) was proud of her Yorkshire roots. She was born in Morley in 1929 and died in her adopted home of Singapore in 2021. A full life of giving and supporting of many causes. She was a keen horticulturist and would be so happy with the reinvention of the Iris Garden, the extended season of interest, and the improved accessibility for Nunnington Hall visitors. I can’t wait to visit when it’s all complete."