B&Q says that all the plants it sells by 2026 will be completely peat-free.
Peat releases huge amounts of stored carbon dioxide when it is harvested, which adds to greenhouse gas levels.
The DIY retailer’s 2026 commitment builds on its previous commitment of offering only 100% peat-free bagged compost since 2023.
B&Q has made the pledge amid research indicating growing concern about the environmental impact of peat.
Nearly three-quarters (75%) of people are concerned about UK wildlife – up from 64% seven years ago, with 19% deliberately adopting the use of peat-free compost in the last seven years.
The retailer first launched a peat-free compost in 1991 and has been offering peat-free products for over 30 years.
As well as selling only 100% peat-free bagged compost since 2023, the retailer stopped stocking 100% peat in 2008 and introduced a range of peat-free bedding plants in 2014.
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Peatlands are crucial in protecting natural habitats, provide unique ecosystems for a diverse range of wildlife, and tackling climate change.
They are the world’s largest land store of carbon, absorbing carbon and helping prevent flooding.
However, when peat is extracted and added to gardens, it breaks down quickly, releasing carbon into the atmosphere and contributing to climate change.
B&Q’s head of sustainability Sam Dyer, said: “We know how vital peatlands are in protecting habitats and preventing climate change, and are committed to offering only peat-free plants by 2026, building on our move to 100% peat-free bagged composts last year and our work through our partnership with the Woodland Trust to regenerate peat habitats at Snaizeholme in North Yorkshire.”
Earlier this month, B&Q released figures indicating it was on track to achieve its target of 100% responsible sourcing of wood and paper this year.