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Greenwood Plants has announced a landmark partnership with the Royal Horticultural Society (RHS) and the University of Sheffield to conduct pioneering research into the carbon accounting of nursery stock. This move could reshape how the horticultural industry quantifies the climate impact of plant production.
Running until 2028, the multi-year study will investigate the carbon sequestration and storage potential of trees, shrubs, and herbaceous plants during their time in nursery production and as they establish in cultivated landscapes. Focusing on key native and non-native species commonly grown in the UK, the research will assess carbon balances from propagation through to maturity, building an evidence-based model to help predict the long-term carbon performance of different plant groups.
Louis Kosowicz, Dr Jill Edmondson, Dr Mark Gush, Melanie Asker and Kevin Merritt
The collaboration brings together one of the UK’s leading commercial growers, the country’s most prominent horticultural charity, and a globally recognised centre of academic excellence. The ultimate goal is to provide more effective tools for sustainable plant selection and to support low-carbon planting strategies in urban areas and public spaces.
“Greenwood is committed to driving environmental change, and undertaking important research projects like this will provide valuable insight for the entire industry,” said Melanie Asker, Managing Director at Greenwood Plants. “We’re looking forward to learning more about the carbon benefits of the plants we grow as the study progresses.”
The project is being led by PhD student Louis Kosowicz and supported by Professor Jill Edmondson of the University of Sheffield, a specialist in urban ecology, soil systems, and carbon budgeting. Dr Mark Gush, Head of Environmental Horticulture at the RHS, is also closely involved.
“The RHS is delighted to collaborate with Greenwood Plants and Sheffield University on this project, which addresses a crucial knowledge gap,” said Dr Gush. “Enhancing our ability to predict the carbon dynamics of nursery-grown plants as they establish will be an important contribution to environmental horticulture.”
Greenwood Plants has made sustainability a central part of its business strategy. The company has been peat-free since 2023 and is working towards achieving net-zero carbon emissions by 2030. Investing in scientific research is one of the ways it aims to strengthen the role of UK-grown nursery stock in a climate-resilient future.
Recognised internationally for its leadership, Greenwood was named AIPH International Grower of the Year in 2024.
More information about the company’s sustainability work can be found at: www.greenwoodplants.co.uk/sustainability
