Westland John Innes Peat Free No.3 Mature Plant Compost is a peat free, and carbon-neutral* compost designed to nurture and sustain mature plants for a longer life. Our 28L compost is enhanced with Carbon Gold biochar, which improves aeration, optimizes water retention, and maximizes nutrient availability. Biochar works to release nutrients gradually, ensuring plants get what they need for optimal health. Beyond supporting your garden, biochar offers a sustainable way to enrich soil, store carbon, and combat climate change. As a CO2-negative technology, it’s an excellent choice for gardeners looking to make a positive environmental impact.