International climate change action is increasing, but policy-makers have yet to address a core challenge: land use. Agriculture is a leading cause of greenhouse gas emissions, and with increasing food insecurity and a rapidly growing global population, our response to these challenges must begin in the field. This is the inspiration behind the AGROMIX project – Agroforestry (AGRO-) and mixed farming (-MIX) – which has the ambition of ‘transforming landscapes’ by delivering new research on how these land use systems work, designing models for farmers to implement these practices, and offering policy recommendations for decision makers to support these practices. How will this four-year pan-European project achieve its ambitious goals, whilst using socially-innovative and high-tech participatory approaches?