Festival Urine to Fuel Tree Growth in Welsh National Park
In an innovative environmental initiative, scientists are preparing to use fertiliser derived from human urine to cultivate thousands of trees at Bannau Brycheiniog, the national park also known as the Brecon Beacons in Wales. This groundbreaking project aims to plant and nurture up to 4,500 native trees over the coming years, utilising a sustainable fertiliser source collected from festival attendees.
The Source: Boomtown Festival's Unusual Contribution
The fertiliser was produced by NPK Recovery, a Bristol-based start-up, using urine collected from approximately 700 participants at the Boomtown Festival in Hampshire during July of last year. The company processed the urine into a nutrient-rich fertiliser during the 2025 event, creating about 540 litres of the product specifically for this forestry application.
Lucy Bell-Reeves, co-founder of NPK Recovery, has confirmed that preliminary trials have demonstrated the fertiliser's effectiveness, showing comparable or superior results to conventional fertiliser alternatives. This project marks the first time the urine-based fertiliser will be applied to trees on such a scale, representing a significant step forward in sustainable agricultural practices.
Funding and Implementation Timeline
The Forestry Commission has supported this initiative with a substantial grant of £435,627, enabling the three-year project to proceed. The fertiliser will be applied gradually over this period to maximise its benefits for tree growth and soil health in the designated areas of the national park.
Collaborative Environmental Effort
This project represents a collaboration between NPK Recovery and Stump up for Trees, an environmental charity dedicated to reforestation efforts. Together, they aim to provide a circular economy solution that revitalises native tree species while advancing sustainable forestry practices across Wales.
The initiative demonstrates how waste products can be transformed into valuable resources for environmental restoration. By converting festival urine into tree fertiliser, the project addresses multiple sustainability challenges simultaneously: reducing waste, creating renewable fertiliser, and supporting biodiversity through native tree cultivation.
As climate change concerns continue to grow, such innovative approaches to resource management and reforestation may become increasingly important for maintaining healthy ecosystems. The success of this project could pave the way for similar initiatives at other festivals and events across the country, creating new pathways for sustainable development and environmental stewardship.



