Published on 10 March 2025
Peat is important. Maybe you’ve heard that before, but chances are this knowledge probably hasn’t impacted your day-to-day life much beyond switching to peat-free fertilisers if you’re an especially conscientious gardener. But what is peat, and why is it so important?
What is peat?
Peat forms when decaying organic matter—dead plants that have only partially broken down—builds up over thousands of years. Instead of being released into the atmosphere, the carbon in all that organic matter gets locked away in the soil, making peatlands an important carbon store. In fact, despite covering just 3% of the planet’s land area, peatlands store twice as much carbon as all the Earth’s forests combined (yes, that includes the Amazon!